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[V2][Update][Root][G955U]PartCyborgRom - SamFail Rooted/Debloated/Audio/More

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Trickst4rz

Member
Feb 22, 2018
5
1
I want to try this rom but I only have USB 3.0 Superspeed (6 ports) and USB 3.1 (2 ports), with my ROG Formula motherboard and only USB 3.0 (4 ports) with my Tt The Tower 900 case . I absolutly have 0 USB 2.0 ports.. :(

Edit: Same for my ROG monitor (2x 3.0) and my HUB (7x 3.0)
 

machx1111

Senior Member
Oct 8, 2013
193
39
I want to try this rom but I only have USB 3.0 Superspeed (6 ports) and USB 3.1 (2 ports), with my ROG Formula motherboard and only USB 3.0 (4 ports) with my Tt The Tower 900 case . I absolutly have 0 USB 2.0 ports.. :(

Edit: Same for my ROG monitor (2x 3.0) and my HUB (7x 3.0)


Most have usb 3 now... As many others mentioned, a $10 usb2 hub is your friend.
 

striker661

Senior Member
Nov 17, 2006
61
12
New Bedford, MA
so it looks like i had a driver issue. i had to search for any samsung related drivers and remove them. re-installed the latest drivers and now the ap finally flashes. I get to the kernel panic screen of my phone and it says done at the bottom but how long is it supposed to sit there if at all?

EDIT. If you hang on the kernel panic screen after flashing the BL start over from step one and you'll be good.

EDIT AGAIN: Had to go back to stock considering there's no hope of me getting snapchat to work without inducing a headache. Guess I'm riding the stock pony for this device til we get real root.
 
Last edited:

tehmulletman

New member
Mar 10, 2018
1
0
I'm on a G955U S8+ and I cannot for the life of me get passed this google verification screen. when I put in my old google account from pre-root it just says must be an account from this device? It was an account from this device. Anyway if there is a way around the google verification, I cant find it and would appreciate someone that could yell it at me lol.
 

pilotp94

Member
Sep 8, 2017
7
2
Hey everyone, just thought I'd post this in case anyone else is having the same issue.

Coming back from Oreo Beta - Flashing AP always left me in download mode with "SECURITY CHECK FAIL: system". Tried this about four times without success.
If you're running into this issue, flash BL first, you should boot into recovery with a system mount error. Now reset ODIN and flash AP, this should properly bring you to the upload mode screen. Finally, flash BL one last time. This throws you into recovery, from where you will do a factory reset, followed by a reboot.

Phone's currently booting up now, cheers!
 
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matthewd769

Senior Member
Aug 21, 2017
288
57
Once official Oreo is released, this ROM is the only thing keeping me from jumping straight to Oreo. I'll admit the install process didn't function well the first time for me (couldn't figure out why), second time it passed with flying colors.

I tried 5 times and still issues w bluetooth and apps crashing

---------- Post added at 03:54 PM ---------- Previous post was at 03:48 PM ----------

It's supposed to do that.. then you disconnect from the pc. Restart Odin. Reconnect. Then flash part 2.

But . I have only had it reboot me to recovery twice.. most of the time It stays on the dL screen. So I reboot to recovery manually. I have to flash it a couple times to get it working like the op.
@Goddly i see all the help you provide, your a rockstar. Where does it say disconnect from pc?

---------- Post added at 03:52 PM ---------- Previous post was at 02:54 PM ----------

The way we have to flash this, and every other flash using Odin seems hit or miss, it seems things can get a bit quarky...

Now... I flashed the Rom, via flashfire.

BECAUSE I was already on a version of this rom. I took a real stab in the dark here.


I Wiped, all, internal, system, caches etc.

Then I also flashed part 2 as well. At the same time. It lists a lot of things to check off. Then gives warnings about some areas being write protected. But, I flashed the modem, bootloader. As shown, I was unsure about checking them all, because of the "write protection" message spooked me. But.... I flashed it. This way.

My phone hasn't had a single issue since. It's running perfectly. Battery stats are the best I've had on this device.

I seriously recommend the OPs way to install. But if your having quirky issues. I won't suggest it.. But I, personally, reinstalled via flashfire. Now, I'm not responsible for your device. If something happens... But. it worked perfectly for me. I'm not the only one who has used it successfully either.... Others have flashed BL. And others flashed modems as well... All without bricking.. lol . So. Just an idea.

This thing with amplify and greenify I get less than 1% an hour drain. When I sleep forgot to plug it in. I'll lose 1% every 2 hours or so. She sleeps like A ROCK... I LOVE IT!

Partcyborg is a beast!



View attachment 4441778View attachment 4441779View attachment 4441781

Sent from my SM-G955U using Tapatalk

why flash BQK5 when the newest is BQL1?

---------- Post added at 03:52 PM ---------- Previous post was at 03:52 PM ----------

The way we have to flash this, and every other flash using Odin seems hit or miss, it seems things can get a bit quarky...

Now... I flashed the Rom, via flashfire.

BECAUSE I was already on a version of this rom. I took a real stab in the dark here.


I Wiped, all, internal, system, caches etc.

Then I also flashed part 2 as well. At the same time. It lists a lot of things to check off. Then gives warnings about some areas being write protected. But, I flashed the modem, bootloader. As shown, I was unsure about checking them all, because of the "write protection" message spooked me. But.... I flashed it. This way.

My phone hasn't had a single issue since. It's running perfectly. Battery stats are the best I've had on this device.

I seriously recommend the OPs way to install. But if your having quirky issues. I won't suggest it.. But I, personally, reinstalled via flashfire. Now, I'm not responsible for your device. If something happens... But. it worked perfectly for me. I'm not the only one who has used it successfully either.... Others have flashed BL. And others flashed modems as well... All without bricking.. lol . So. Just an idea.

This thing with amplify and greenify I get less than 1% an hour drain. When I sleep forgot to plug it in. I'll lose 1% every 2 hours or so. She sleeps like A ROCK... I LOVE IT!

Partcyborg is a beast!



View attachment 4441778View attachment 4441779View attachment 4441781

Sent from my SM-G955U using Tapatalk

why flash BQK5 when the newest is BQL1?
 

Yliria

Member
Mar 7, 2018
15
1
If you are charging to 100%, you arent running the factory boot image, and if you arent running the factory boot then you arent rooted and you can't be running the rom. So sorry, no you really arent unless you managed to get it running on a device with an unlocked bootloader.

I don't hit 100 but I do go over the 80. The highest I've noticed it at was 84 or 85. I checked with a root checker and it says I have root access and I can do assorted rootie things. But this is my first time ever rooting so maybe I've done something wrong?
 

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Goddly

Inactive Recognized Contributor
Jan 7, 2013
4,269
5,540
Binghamton
I tried 5 times and still issues w bluetooth and apps crashing

---------- Post added at 03:54 PM ---------- Previous post was at 03:48 PM ----------


@Goddly i see all the help you provide, your a rockstar. Where does it say disconnect from pc?

---------- Post added at 03:52 PM ---------- Previous post was at 02:54 PM ----------



why flash BQK5 when the newest is BQL1?

---------- Post added at 03:52 PM ---------- Previous post was at 03:52 PM ----------



why flash BQK5 when the newest is BQL1?

I had modem crash issues with the BQL1 update, I flashed the BQK5 modem. I'm pretty sure the modem in BQL1 is AQK2. But I flashed that. Had zero issues since.
 

matthewd769

Senior Member
Aug 21, 2017
288
57
I had modem crash issues with the BQL1 update, I flashed the BQK5 modem. I'm pretty sure the modem in BQL1 is AQK2. But I flashed that. Had zero issues since.

so you also had issues with BQL1 ... and flashed the BQK5 with the BL that came with the first OP?

OR now that i read that again you flashed the BQL1 with the BQK5 modem??

i did just what i thought you have done via flashfire ... BQL1 with the BQK5 modem i have made a cal and linked my bluetooth headphones and no issues so far
 
Last edited:

Xak

Senior Member
Jan 12, 2013
878
490
www.TiTechZone.com
@partcyborg ive tried it like 50 times each time complely flashed back to BQL1 im on g955u att

i have usb 2 ports use them all time it fails never get that error unknown upload always shows FAIL! auth no matter how many times i do it and no matter what usb 2 port i plug into it yes i have drivers installed and using default cable

i downgraded to nougat coming from crb8 though oreo beta not sure if that would cause it to work when downgrade it worked full and am able to boot blq1 7.0 both used same bootloader please help desperate to get this working stayed up like 6 hours at night trying and tried my laptop also fails same error

---------- Post added at 06:29 PM ---------- Previous post was at 05:34 PM ----------

Hey everyone, just thought I'd post this in case anyone else is having the same issue.

Coming back from Oreo Beta - Flashing AP always left me in download mode with "SECURITY CHECK FAIL: system". Tried this about four times without success.
If you're running into this issue, flash BL first, you should boot into recovery with a system mount error. Now reset ODIN and flash AP, this should properly bring you to the upload mode screen. Finally, flash BL one last time. This throws you into recovery, from where you will do a factory reset, followed by a reboot.

Phone's currently booting up now, cheers!

@partcyborg this worked if anyone else has issues flashing try this ! worked 100% i was on android oreo beta before too so this worked!

Thanks @pilotp94
 
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machx1111

Senior Member
Oct 8, 2013
193
39
Argh so I love the Rom and thought I was all good but unfortunately it is forgetting my paired Bluetooth devices. I have to pair them again each reboot.

I searched noticed others experienced this as well, but didn't see a fix. Really love the Rom but I can't do without Bluetooth unfortunately
 
NRD90M.G955USQU2BQK5 I've had this rooted since mid February and I have a strange question. I've mopped up a couple of times because I try to install magisk through a flash fire but it didn't take but when it Rebooted it triggered a violation and I went to straight to bad download mode all I had to do was to read flash through Odin the bootloader to so the version you see up there except it starts with BL. My question is this whole issue is the bootloader being locked since we have access to the bootloader file isn't it possible to tweak it to get rid of the lock prior to flashing it or am I way in left field?
 

partcyborg

Recognized Developer
Jun 23, 2017
2,543
2,278
Does anyone have the WifiTether router app on this phone? I'm having difficulty with it and the dev thinks its this rom. @partcyborg

What makes the dev think that? Without a specific reason it sounds like scapegoating to me ?️.

Tell him/her that they are welcome to msg me here or on telegram and ill happily assist in fixing it however i can.
 
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partcyborg

Recognized Developer
Jun 23, 2017
2,543
2,278
The way we have to flash this, and every other flash using Odin seems hit or miss, it seems things can get a bit quarky...

Now... I flashed the Rom, via flashfire.

Thanks man! Great plug for the flashfire method, which fyi is documented in the op but is kinda buried underneath the odin get-root-from-stock method. Anyone who already has root and is having odin trouble (or just would rather not use it) please feel free to try the flashfire method for flashing AP Part1.

That being said, unfortunately i can not recommend flashing the bl this way. Despite it working very well on the s8 and pretty much solely making root fun and useful, its not without its problems. I once had it corrupt something in a special not in the firmware partition for the modem that very nearly permanently bricked my phone when restoring a full backup. Like perm in a "phone crashes on boot every time while running root able firmware and only booting after about 30-50 crashes in a row and without working radio". I was, very fortunately, barely able to fix it but it easily could have gone the other way.
 

Goddly

Inactive Recognized Contributor
Jan 7, 2013
4,269
5,540
Binghamton
Thanks man! Great plug for the flashfire method, which fyi is documented in the op but is kinda buried underneath the odin get-root-from-stock method. Anyone who already has root and is having odin trouble (or just would rather not use it) please feel free to try the flashfire method for flashing AP Part1.

That being said, unfortunately i can not recommend flashing the bl this way. Despite it working very well on the s8 and pretty much solely making root fun and useful, its not without its problems. I once had it corrupt something in a special not in the firmware partition for the modem that very nearly permanently bricked my phone when restoring a full backup. Like perm in a "phone crashes on boot every time while running root able firmware and only booting after about 30-50 crashes in a row and without working radio". I was, very fortunately, barely able to fix it but it easily could have gone the other way.

I'm with you bro! I'm just trying to help out, I said highly recommend to follow the op. Lol I would never overstep the Creator. Lol I have had great luck with it... Thats all. You know I appreciate your hard work brother!

---------- Post added at 05:54 AM ---------- Previous post was at 05:51 AM ----------

so you also had issues with BQL1 ... and flashed the BQK5 with the BL that came with the first OP?

OR now that i read that again you flashed the BQL1 with the BQK5 modem??

i did just what i thought you have done via flashfire ... BQL1 with the BQK5 modem i have made a cal and linked my bluetooth headphones and no issues so far

That's what I did. Hope it works for you
 

sallambander

Member
Apr 27, 2017
37
1
What makes the dev think that? Without a specific reason it sounds like scapegoating to me ?️.

Tell him/her that they are welcome to msg me here or on telegram and ill happily assist in fixing it however i can.
Nah its probably the restore i did using flashfire that's messing up my root. When I activate it I get an error Saying no root and when I go to supersu it says the same til I reboot. I must be restoring a backup thats breaking root. ?
 

partcyborg

Recognized Developer
Jun 23, 2017
2,543
2,278
Nah its probably the restore i did using flashfire that's messing up my root. When I activate it I get an error Saying no root and when I go to supersu it says the same til I reboot. I must be restoring a backup thats breaking root. ?

Can you tell me a little more about exactly what you are restoring (system? Data? Internal SD?) and why (restore after upgrade? After bootloop?)? I can probably help, as from aqh3 to bql1 i did not start over with factory reset once ?️
 

sallambander

Member
Apr 27, 2017
37
1
Can you tell me a little more about exactly what you are restoring (system? Data? Internal SD?) and why (restore after upgrade? After bootloop?)? I can probably help, as from aqh3 to bql1 i did not start over with factory reset once ?️
I wanted to keep all apps/logins/accounts/info. I restored data and internal. No bootloop. The backup originally was from my old rom but no rom specific apps transferred.
 

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  • 87
    SamFail presents...

    PartCyborgRom
    BQL1


    A Rooted Custom Rom

    For G955U/W, Bootloader Revisions 1, 2, 3


    Updates
    NOW Supporting Bootloader V3!
    I am happy to announce that BL version 3 phones are now supported by PartCyborgRom!
    Just download the Version 3 BL further down in this post (after reading everything in between!) and use it in place of the normal BL Part2 file.

    NOTICE: Rooting Process Steps Updated!
    Enough people are coming from later bootloader revisions that have some extra protections that I updated the process to use an additional step. Many of you have used this step already at my suggestion when your AP flash was failing with Auth Error without a reboot to Upload.


    Featured Modifications

    Deodexed
    Deodexed for all devices.
    I found a way that works!
    It should keep working as long as nougat
    (is that a haiku?)

    Xposed Preinstalled
    PCR now comes out of the flasher with xposed pre-installed!
    NOTE: Xposed Installer may crash on first boot. It will not crash after setup finishes and you reboot

    New Boot Animation
    Another great one from @Ryan-refoua.
    This one is my favorite so far.

    JamesDSP
    I added another DSP style audio mod. JamesDSP is similar to V4A in how it operates and what features it has, but it has some really awesome features that have made me a fan and a regular user. Among other things, it has a better convolver (IRS processing) implementation, and its bass boost is significantly better than v4a. If there are things you like about V4A you can use both at the same time.

    ITYBP Modded YouTube
    A last minute addition, this is a really nice youtube mod brought to you by @laura almeida, @Razerman and @ZaneZam. It features some cool additions like native adblocking (no more xposed module), overriding your max youtube resolution (you can watch 4k videos on your phone, but not 4k hdr). I have been using it for a while and really like it. A big thanks to them for letting me include it with PCR

    Improved Debloating
    Found better stuff to delete. Added back some stuff I took out before that some of you asked for.
    If you find something missing that you want back, pull it from the stock rom and install it in /system/app or /system/priv-app, wherever you got it from.

    Improved Battery Life
    Thanks to some battery sleuthing by @TheMadScientist, this release comes with a nice big bump in efficiency. With just some very minor tuning using amplify and a service disabler, I can get around 1%/h drain.

    Performance Improvements
    That increased battery life does not come at the cost of performance. In fact performance is better too. Part of that is due some personally tested build.prop tweaks. Another part is some data optimisation scripts that now run at boot. You wont notice those, but they are there doing their thing.


    Other Features
    New for first time flashers
    - Pre-Rooted with SuperSU installed
    - CSC OYN pre-installed. Tested working on several carriers
    - RCS and VoLTE icons removed from status bar.
    - High quality audio mods, including
    - Viper Audio (V4A)
    - Dolby Atmos from the Axon 7
    - Pandora hifi audio framework
    - Native Google Dialer & Contacts support, including local search, spam call blocking
    - Oreo 8.1 Emoji Icon Set
    - Custom Lockscreen Clock font
    - Stock system display fonts replaced with Apple's original San Francisco Font


    Special Thanks
    - @ahiron and @Zackptg5 for the killer sounds from V4A and Dolby Atmos Mods!
    - The Aiur crew for Pandora (now a legacy mod but works great on the s8)
    - @syndre for the Google Dialer and Contacts framework mod
    - @rayan-refoua for the beautiful Tech Lines Custom boot and shutdown animations!
    - Last but not least, my new friend @laura almeida, along with @Razerman amd @ZaneZam for letting me include the iYTBP - injected YouTube Background Playback Mod
    - everyone who tested


    Warnings/Disclaimers/Known Issues
    - 80% Battery life like every other rooted US snapdragon device
    - Flashing on a USB 3.0 port will likely cause corruption in your flash that can cause kernel panics, loss of root, and occasionally very strange other errors. If you get something like this, its not the rom its a hardware conflict that can only show up with larger images like are used in SamFail flashing. See the section below on Kernel Panics for more.
    - If there is an app or apk from the stock rom that you wish you had installed, the best solution is to extract it from your stock rom image and copy it to the same place in /system using a root file manager.


    SamFail Rooting Process
    and Rom Installation


    WARNING: THE FOLLOWING WILL ERASE YOUR WHOLE PHONE
    If you have a SDCard, remove it from your device. Occasional firmware incidents have wiped SDCards in the past. It has neer happened to me, but I have a backup of my sdcard so I can be a little more risky. Better safe than sorry.

    Prepare the Following:
    - complete stock rom at your bootloader rev in case things dont work
    - Everything backed up
    - Both Prince Comsy Odin, and Regular Odin for flashing stock
    - A USB 2.0 Port. If you attempt to flash with a USB 3.0 port it may work, but if you get kernel panics, or unexpected bad behavior and/or crashes your usb3 is absolutely to blame. some people get lucky and suceed after a few tries, YMMV. If you can not acquire a machine with a usb2.0 port, get a usb2.0 hub and run your phone into that & that into your machine. Reports are that has made things work for some, but we get few reports back.


    What is my Bootloader Revision?
    Your bootloader revision is part of the baseband build number of the firmware you are currently running. Lets use this rom as our example. The full build number is as follows: G955USQS2BQL1
    Start from the right and count 5 characters back. See that 2? That is the bootloader revision for the firmware that came with this rom. But we are not flashing the BQL1 firmware (or Baseband), We are using an older version because it works better. The version we are flashing is: G955UEU2AQK2. Can you tell which revision it is?


    Is my Phone Compatible?
    Is it a G955U? Is it a G950W? If you answered "yes" to one of those questions, then the answer is "yes". That being said, flashing this rom if you are on bootloader revision 1 will upgrade your bootloader revision to 2, which means that any previous rom you were running wont work, so be prepared by having a copy of stock for bootloader version 2. If you don't want to move to version 2, you can still run the latest PartCyborgRom though, just use the G955UEU1AQk1 BL_ tar under Old Downloads in place of the one that came with this one. It will work just fine. However if you are unsure I suggest you go ahead and upgrade, there are not really any benefits to staying on 1 at this point.




    Steps to Root

    1) Download and unzip AP Part 1 and BL Part 2 zip files.

    2) Download and unzip Prince Comsey Odin and start it up

    3) Reboot device into Download mode and connect it to your pc

    4A) Open Comsy Odin and Reboot into Download mode. Add Only the BL Part2.tar.md5 file. Go to the options tab and remove the checkbox next to "Auto-Reboot". Do not check any additional checkboxes and leave the other ones alone. Connect your phone and Start. Odin will flash the BL file to your device and will say PASS, but will just sit in download mode (because we turned off auto-reboot!). This makes the next part a little easier...


    4B) Reset Comsy Odin and use the "three button salute" on your device to Reboot back Download mode. This time only add the AP Part1.tar.md5 file. Select only the following options:
    - "Auto-Reboot"
    - "F-Reset Time"
    - "Nand Erase All"

    NOTE: Odin will freeze while checking the AP tar.md5 hash.
    Be patient, it will come back. If your computer is old this will take even longer.

    5) Click "Start" and wait for the system.img.ext4 file to flash fully to your device. This will take a while.

    ATTENTION
    When the flash finishes, this is when the SamFail magic happens. Instead of saying "Failed (Auth)" like it should, the device will crash into upload mode with "Unknow Error".

    If your device stays in Download Mode:
    If your device does not do this, and just says "Failed (Auth)" or something similar and stays in download mode, you need to start again from the beginning, but using a different set of usb ports as you have likely suffered from the usb3 corruption

    When you see the upload mode page, do the 3 button salute to reboot into download mode again.

    WARNING: When you reboot from upload mode, it wont look like download mode. You will see an error.

    When you reboot back into download mode, your screen will say that you had a failed update and you need to do emergency repair or take your device to a service center.
    Rest assured, your phone is actually in download mode, and Odin will have recognized it and said "Added!" along with the com port lighting up underneath the progress bar. Just continue the process. It is safe to do so and that error will go away after the next step.

    6) Close and re-open Comsy Odin or hit the reset button, and once again add BL_PartCyborgRom-BootLoopEdition-<version>.tar.md5 to the BL section.

    7) Do not change any of the options checkboxes, thus leaving the checkboxes checked for "F Reset Time" and "Auto Reboot". Click "Start" and flash the BL (part 2) to your device.
    Note: Flashing BL twice is necessary as some newer stock BLs have patched the Root method we use, but the Combo Factory firmware is still vulnerable. In other words, the SamFail nickname continues to be prolific :good: :good:

    Note: If you forgot to uncheck nand erase all, don't worry. You are just wasting time doing something again that you already did, the outcome is the same. "All" in "Nand Erase All" means "all userdata", which means cache and, well, userdata. Nothing else is deleted.

    8) Wait for the flash to finish . It won't take very long at all as the files are small.

    9) When it has finished, Odin will say PASS and your device will reboot into recovery.
    From this point forther the scary download error message will be gone for good (or until next flash). Don't go looking yet though, you have more work to do to get root.

    Warning: Failure to follow this step could lead to a corrupted instance with no cell coverrage

    10) When in recovery issue a factory reset. This ensures that your device has a userdata and cache partitions that are valid, and that the csc is processed correctly. Failure to do the reset could cause issues with either.

    11) Boot the device as normal. Wait for it to come up. Its deodexed so it will take longer than even your average odexed rom.

    All done!


    FlashFire Instructions


    - Get the ROM on your phone and unzip it
    - Open up FlashFire
    - Add a Wipe task, select the top 3 items only
    - Select Flash Firmware and load up the AP_PartCyborgRom-BootLoopEdition-<version>.Part1.tar.md5 file to flash your new system
    - Select Reboot to Recovery
    - Make sure "Inject Root" is NOT checked
    - Press go. Wait for the rom to flash and your device to reboot into recovery
    - From recovery do a factory reset
    - Then select reboot to Download Mode
    - When device reboots into Download mode, flash BL_PartCyborgRom-BootLoopEdition-<version>.Part2.tar.md5

    You have to use odin for the BL file because flashing bootloaders in FlashFire is a bad idea.



    Dirty Flashers


    Yes, you can dirty flash this rom to upgrade, however it is problematic and can cause issues. I did it for a long time, but my install was a mess by the time I gave up and reset.
    To dirty flash, follow your preferred method of flashing above, but skip the Wipe step.

    Odin
    Skip "Nand Erase All" during the Part 1 flash. Do everything else the same

    FlashFire
    For the first Wipe task, instead of selecting the top 3, select only Dalvik like the second wipe task.

    NOTE: This procedure is ONLY for people upgrading from an earlier PartCyborgRom version. If you are coming from stock you can not dirty flash because you userdata is encrypted which is not supported by the Factory firmware. If you are coming from other rom, or stock, I have no idea man but don't look at me if it blows up.

    ANOTHER NOTE: This method of flashing is unsupported! If you do this and you have issues, you are on your own. If you think they are the rom, then back up your entire rom, wipe and reproduce them.



    Help! I Got a Boot loop!
    If you get a boot loop or your device hangs at boot, try the following:

    1) Reboot to recovery and factory reset again.
    To get to recovery hold power+vol-down until screen goes black, then wait till upload mode (press power key for 7+ secs) comes up. Then press vol-down+power again and hold it till it reboots and as SOON as the screen goes black switch to holding vol-up+power+bixby. Hold it for 5-7sec then let go and you will wind up in recovery mode. If this doesnt help, or you can't get to recovery because you cant press the buttons right, proceed to the next step.
    2) Try flashing just Part 2 (the BL) again. not only will this get you back in recovery, it will also format your cache again. Its worth a shot and doesnt take long.

    Kernel Panic, Invalid Argument

    Start Over
    Go back to the beginning and do everything again. If it fails again, even in a slightly different way this time, bad interaction between the s8 and your USB port/controller/cable/etc are causing the image to be corrupted as its being written to disk. Try the following:

    1) New USB Ports. If you have them, use a different set of usb ports (not the one next to it, but one further away). Its possible that that will be your "good" port, and that will be enough. Lots of machines also have some USB3 ports and some USB2.
    2) New Cable. Its less likely, but maybe a new cable will help. Do the whole thing over with a new cable.
    3) Try a few times. It sounds silly, but people who have had this issue have reported that eventually it just works. Try a few times until you get sick of trying. If you try like 10 times it probably wont work on the 11th though.

    I Dont Have Another USB Port!
    Try to borrow your partner/spouse/roommate/friends computer for a quick flash. Ask about the USB ports though, because another 3.0 port may not help you.
    If you can't get someones computer, you can purchase a USB2.0 Hub online or at your friendly neighborhood electronics store. They arent very expensive, and I have heard positive reports from people saying it did the trick.


    None of that Worked! I'm Screwed!
    No you probably arent. I can count on one hand the number of people who someone couldnt get this working eventually. Some of us will be here to help. Check out our telegram channel, where people will be around that can help you. Its right here!.



    And they all rooted happily ever after.
    The End.


    XDA:DevDB Information
    PartCyborgRom, ROM for the Samsung Galaxy S8

    Contributors
    partcyborg
    ROM OS Version: 7.x Nougat
    ROM Kernel: Linux 4.x
    Based On: TouchWiz/Samsung Experience

    Version Information
    Status: Stable
    Current Stable Version: BQL1
    Stable Release Date: 2017-12-10

    Created 2017-12-11
    Last Updated 2018-2-10
    9
    Thanks to everyone who volunteered! I have enough testers for now, but if i need some more i will reopen this.


    Calling for Testers!!

    Its that time again. I've got a new rom ready and I need some 955u testers.

    I have some special surprises in store for this one, as its been too long since the last version.

    Please only volunteer if you meet the following requirements:

    - Are comfortable with wiping your phone completely, and then going right back to what you have now if something is broken off the bat (unlikely, but possible)
    - Are comfortable with instability, crashes, stuff not working right, etc.
    - Able to flash the rom sometime in the next 24 hours
    - Are currently running, or have run PartCyborgRom recently, as in you ran the current release at some point
    - Have a basic understanding of how to troubleshoot and provide decent feedback. Nothing too major, just things like:
    - figure out how to reproduce the issue (if possible)
    - know how to get a logcat during when the issue occurs, or right after (again if possible). I can do a little writeup on this stuff if people are interested
    - Have a usb2.0 port to flash from (i get too many bugreports caused by usb3 corruption, gotta clean up the signal a bit). PLEASE check before asking


    If you meet all (or most, and are sure you can cover for the ones you dont), shoot me a message here or on telegram. I'll be checking on both of them throughout the day.