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Nexus 5X bootloop of death fix (BLOD) | 7/30 Huge performance update!

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XCnathan32

Senior Member
May 30, 2013
445
1,010
Texas
Read First: This method is relatively drastic, and will hurt device performance some. You should only use this as a last resort, if the more basic methods of fixing a soft brick didn't work (e.g, factory reset, flash stock firmware, etc.)​

*Update 7/30: On my 6P, I found that the original kernel with this mod was using pretty much 1.5 cores, instead of all 4. People with the 5X were also reporting this, so I modified the images to utilize all 4 cores better. It helps performance a lot (able to beat stock 6P in some Antutu marks now, and play intensive games), try it out if you haven't yet!

*Petition:
I made a petition for Google to officially release and sign modified boot.imgs, so that people with locked bootloaders can fix their devices too. Check it out here. (I apologize for dumbing it down so much, I wanted to make sure everyone could understand it)

*Changelog:

  • 8/26 - EX kernel for Android O uploaded.
  • 8/22 - Android O working, boot.img and source uploaded.
  • 8/08, 2nd Change - Added boot.img for 48C firmware (August security patch).
  • 8/08 - Updated EX kernel to version 4.1.2. This updated zip adds the CPU utilization patch to the init.elemntalx.rc, instead of removing the old init.angler.rc and copying the new init over. That should mean more compatibility with Roms/kernels that modify the init.angler.rc. I also modified the camera-daemon to use cpus 0-3 instead of 0-2, so hopefully this should make the a camera bit faster too.
  • 8/07 - Added boot.img for 1 core, just to see if it would work for devices that didn't work with the 4 core image.
  • 7/30, 2nd Change - Added universal EX zip, this zip should modify your kernel to use only 4 cores, and it should modify it to utilize all 4 cores. You can flash this over most ROMs and it should work. Also added a donation url, and this changelog.
  • 7/30 - Updated this fix to greatly improve performance. Before this fix, the device was only using 1 core for foreground tasks, now it will use all 4 cores. Also revamped OP, and added Marshmallow images.
  • 7/23- Created this fix, stock boot.img, twrp, and EX kernel added.


*What this fix does, and how to apply it:

The problem:
The problem with most of the devices in a BLOD, is that a hardware failure related to the BIG cluster has occurred. This fix remedies the problem by disabling the BIG cores. Unfortunately, this does mean that you will take a performance hit. However, I am continually working on ways to improve the device's performance.

The update: If anyone remembers device performance with the first fix, it was hurt a lot, however, after finding out that the device was only using 1 core for all foreground tasks, I modified the ramdisk to utilize all 4 cores more effectively, and it helps a lot.

Requirements: For this fix to work, you need:
  • A brain
  • A computer
  • A bootlooping 5X with an unlocked bootloader/OEM unlocking enabled
  • The modified files of your choice.
  • Fastboot on your computer (preferably installed system wide). If you do not know what this is, or do not have it, look at this post. Answer yes to all of the prompts to install it.

How to apply the fix:
  1. Boot your phone into bootloader (hold power and volume down).
  2. Connect your phone to the computer.
  3. Go to the folder where you have the modified files, then hold shift and right click in a blank space, click on "open command prompt here" in the menu that pops up.
  4. In the command prompt: type "fastboot flash boot [name of the file here]" and then press enter. If you're flashing TWRP, replace boot with recovery. (Linux users, make sure you're running as root)
    Edit: with the new universal EX zip, you don't have to flash the modified boot.img now, you can just flash TWRP, and then flash the EX zip, and everything should work.
  5. Boot up your phone, and hopefully it should work!


*If your phone is bootloader locked/OEM locked:

You can try to get your phone to boot long enough to enable OEM unlocking. Some users have reported success by freezing their phone for a bit, then booting it. Others have let their battery drain all the way, and then tried to boot their phone, but the most successful method seems to be heating up your phone (a lot).
If you do attempt any of these methods, make sure you have time and patience, as it will take a long time.

To enable OEM unlocking and unlock bootloader:
  1. Go to settings.
  2. Go to developer options, if you do not see that, go to "about phone", scroll to build number, and then tap it 7 times. You should now see developer options in settings.
  3. Once you're in developer options, click on "OEM unlocking" and accept the prompt.
  4. Now reboot your phone to bootloader, connect your phone to the computer, and type "fastboot flashing unlock" Your bootloader should now be unlocked.

*Downloads:

  • Boot.img from Android O DP6: Download | Mirror. This Image is the from the first official release of Android O, and is modified to use 4 cores. As a bonus, it also disables forced encryption. Thank you to @xls654 for figuring out how to get Android O to work.
  • Boot.img from stock 48C, 7.1.2 firmware (August security patch): Download | Mirror. This Image is modified to use only 4 cores, and is modified to utilize the 4 cores more effectively. I have had multiple people on the 6p say that first boot takes a while after flashing this, so just wait about 20 minutes before you declare something is wrong with it.
  • Boot.img from stock 47Z, 7.1.2 firmware: Download | Mirror. This Image is modified to use only 4 cores, and is modified to utilize the 4 cores more effectively. I have had multiple people on the 6p say that first boot takes a while after flashing this, so just wait about 20 minutes before you declare something is wrong with it.
  • TWRP version 3.1.1: Download | Mirror. This TWRP image is modified to use only 4 cores.
  • EX kernel version 5.03, for Android O: Download | Mirror. EX kernel for Android Oreo, modified to use 4 cores. You must flash it over the 4 core boot.img for it to work.
  • EX kernel version 4.12, universal zip: Download | Mirror. This zip is modified to use only 4 cores, and it will also apply the speed fix. Flash this in TWRP. I highly recommend you flash this, as it improves device performance notably, and disables forced encryption. This kernel should work with almost any other ROM, and it applies the core utilization mod from the first image, thanks to AnyKernel.
  • Boot.img modified to use only 1 Core. Some people were reporting that the 4 core images weren't working for them, someone suggested that I make a 1 core version to see if that helps at all. Here it is: Download | Mirror

For Marshmallow:
  • Boot.img from the latest 6.0.1 20K firmware: Download | Mirror. This boot.img is modified to use only 4 cores, and is modified to utilize those 4 cores more effectively. Untested as of now.
  • Ex kernel version 1.2.0 for Marshmallow: Download | Mirror. This is the latest EX kernel for marshmallow, it will keep the core utilization mod from the above image, and should work on almost any other ROM, thanks to any kernel. Untested as of now.


*Source Code:

  • Source for 4 core Android O DP6: Source.


*Tested custom ROMS/kernels

you should be able to use almost any ROM with a stock based kernel, just flash the EX zip over it.

If you have a custom ROM/kernel that worked for you, let me know and I'll put it up here.


*To improve performance slightly:

  • Flash a custom kernel. I will upload more kernels as people request more, so stay tuned.
  • Flash a custom ROM. Once again, I will upload more as people request more, so stay tuned.
  • Overclock the little cores. It can slightly help offset the lost performance, on my 6P, I have mine overclocked to 1632MHz, and it works perfectly for me. Edit: I actually recommend not overclocking. Many people have reported their Little cores failing, so I would go for longevity on this device, and keep it at stock clocks, or even underclock it. The speed difference you get from overclocking is negligible anyways.
  • Disable animations in developer options. Seriously, as soon as I found out about this tweak, I've used it on ever single device I've owned, it helps a ton.


*Credits:

@rchtk, His post here gave me the idea for how to modify the images.
@flar2, He built the Elemental X kernel for this device, I merely made a small modification to his kernel to use 4 cores. In no way am I trying to steal and/or discredit his work.
The TWRP development team, they built the TWRP recovery for this device, I merely made a small modification to their recovery to use 4 cores. In no way am I trying to steal and/or discredit their work.
@xls654, He found out how to get Android O working with 4 cores.


*FAQs:

  • What's the password for TWRP/Why is TWRP asking for a password? - In android 7.0, Google added forced encryption to the data partition. To get around this, click cancel when TWRP asks you for a password, and then factory reset the device. Then you can flash EX kernel/Magisk to disable forced encryption.
  • Why am I getting an error when I try to flash the images? - Your bootloader is probably not unlocked, try running the command "fastboot flashing unlock", If you get an error there too, then you will have to enable OEM unlocking before you can continue.
  • It's not working for me, how do I fix it? - My only advice for that is: "Flash the stock firmware for whatever version image you're trying to flash, then reflash the images again" If you're stuck on the boot animation, wait at least 20 minutes before you declare it's not working. If none of that works, chances are you have a different problem.
  • Does EX kernel have the new speed fix? - Yep, the EX kernel zip should apply the 4 core fix, and the speed fix. It should also work with almost any ROM, including stock.


I would like to help as many people as I can, however, I am much more likely to be able to easily help you/reply to your post if you clearly state your problem and the steps you attempted to fix it. I will be much less likely to reply to posts such as "omggg i flashed the image and my phone won't boot helppp" Please read through post first, I did not spend time typing up this OP for no one to read it. If I can see that you read through the OP and have attempted all the steps, then I will be much more willing to help you.

I set up donations on my profile, for those of you who want to donate. I have spent countless hours modifying, flashing, testing, and helping, don't get me wrong, I love doing this and helping y'all out, but donations really keep me motivated to keep going, and donations also will help me fund new equipment and devices that will help further my android development. Every single donation is appreciated :) Donate to me here!

If this guide helped you, please click thanks, it means a lot to me :)
 
Last edited:

Acelogic_

Member
May 4, 2015
19
13
New York
Didn't work

I flashed the image and the bootloop is still there, thanks for the effort though. Anything else you'll need for the 5X to continue your research ?
 

TheIronLefty

Senior Member
Oct 7, 2014
133
211
Tbilisi
this actually fixes my phone, i do the same with elementalx kernel i disable the big cores as soon as my phone boots up so this img is really handy
 

ragdoll96

Member
Aug 20, 2014
9
3
25
Tripoli
So I just flashed this over the May 2017 build and my phone boots and is working just fine, albeit a bit slowly.

I'll update to the latest build and reflash but for now you can say it works as intended. Thanks for the effort
 

X-calibar

New member
Jul 23, 2017
2
0
It's worked for me. Phone is slower, and taking picture with hdr+ is okey but processing is very slow. I turned off animation, is there anything else I can change so phone can perform faster ?
 

stipo42

Member
Apr 16, 2011
16
0
Any idea how long this should take? I managed to get into my 5x and enable debug mode / OEM unlocking
I ran the fastboot flash boot N2G47Z_4Cores.img command and its been stuck for about 5 minutes
 

stipo42

Member
Apr 16, 2011
16
0
after trying again I was able to get it to write successfully however the nexus 5x is still bootlooping, this is an original hardware revision nexus 5x if that helps
 

XCnathan32

Senior Member
May 30, 2013
445
1,010
Texas
So I just flashed this over the May 2017 build and my phone boots and is working just fine, albeit a bit slowly.

I'll update to the latest build and reflash but for now you can say it works as intended. Thanks for the effort

It's worked for me. Phone is slower, and taking picture with hdr+ is okey but processing is very slow. I turned off animation, is there anything else I can change so phone can perform faster ?

I updated the OP with a modified EX kernel, and some tweaks to make your device faster, check it out to see if it helps your device.

Any idea how long this should take? I managed to get into my 5x and enable debug mode / OEM unlocking
I ran the fastboot flash boot N2G47Z_4Cores.img command and its been stuck for about 5 minutes

My first time took around 10 minutes to boot I think, if it takes over 20 minutes, reboot your device and reflash, and if that fails, update your firmware to the latest version.
 

XCnathan32

Senior Member
May 30, 2013
445
1,010
Texas
after trying again I was able to get it to write successfully however the nexus 5x is still bootlooping, this is an original hardware revision nexus 5x if that helps

Are you upgrading from stock firmware or a custom rom? This boot.img is for the latest 7.1.2 build. Unless you have files that you can't afford to delete, I would recommend reflashing your stock firmware with the latest version.
 
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stipo42

Member
Apr 16, 2011
16
0
update: I was able to install twrp and boot into that, but its asking for a password.... @XCnathan32 is there a specific password you set or should "default_password" work?
 

XCnathan32

Senior Member
May 30, 2013
445
1,010
Texas
update: I was able to install twrp and boot into that, but its asking for a password.... @XCnathan32 is there a specific password you set or should "default_password" work?

default_password didn't work for me, I just clicked cancel when it asked for the encryption, and then I factory reset the device through TWRP. If you have important files you can't delete, you can try just flashing EX Kernel, as I don't think EX needs to access the /data partition.
 
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stipo42

Member
Apr 16, 2011
16
0
Update 2 : Seems I was able to just cancel out of the password prompt. Flashed Elemental X and it looks like its booting!
Awesome job my friend, you fixed the (temporarily) unfixable. I'll play around with this for a few days and report back.
 

jesseknodat

New member
Dec 31, 2013
1
1
Thanks!

So I found a bootloop fix for the Nexus 6p here, and some users reported having the same problem with their Nexus 5X.

I do not own a Nexus 5X, but I made a modified boot.img the same way I made the modified 6P image. It simply disables the big cores, as that's what was preventing the 6P from booting.
Please report if this works/does not work for you, that way I can get a good sample size to determine how effective this is.

Disclaimer: I have not tested this, I uploaded this image so testers could flash it and report if it works or not. If your device breaks/spontaneously combusts after flashing this, you accepted that risk.
Edit: A few people have reported this working, so it should be safe.

N2G47Z_4Cores.img, this image is based on the latest 7.1.2 firmware for the Nexus 5X, modified by me to only use 4 cores. 4 reported working, 2 reported not working.
To flash it: you must have an unlocked bootloader and fastboot on your PC. Boot your device into bootloader, and then run the command fastboot flash boot N2G47Z_4Cores.img Hopefully, your device will now boot up.

TWRP3_1_1_5X.img, modified to use only 4 cores, will get working TWRP on your device. Not tested yet
To flash, navigate to the folder where it is downloaded, make sure you have fastboot installed, and then run this command: fastboot flash recovery TWRP3_1_1_5X.img.

EX4_10_5X.zip, Elemental X kernel V4.10 for android 7.1.2, modified to use only 4 cores, I highly recommend you flash this, as EX kernel is faster, and you can overclock to the little cluster to make up for some speed. Not tested yet.
To flash, copy the zip to your device, then flash it in the modified TWRP, just go through the AROMA installer as usual. Changing the BIG cpu frequency in the installer will not change anything, as the cores are disabled.

Additional notes:
Root worked on my 6p by flashing the regular SuperSu zip just as normal. None tested for 5X yet

To improve performance slightly:
Disable animations in developer options, it helps a lot.
Overclock little cores with EX kernel, I have mine set to 1632 MHz and everything is working fine so far.
Set CPU governor to performance (or some aggressive governor), with the BIG cores disabled, the battery is already much better, so using a better performance governor shouldn't be a problem for battery life.
Doing a fresh flash of the firmware/factory reset can help a lot too.
Fast custom roms can also help.

Roms that me/other users have found working with this fix:
Pure Nexus worked well for me on the 6p, insane battery life and very little lag. If you are going to flash a rom, be sure to flash the modified EX kernel over it.
If you find a rom that works with this fix, tell me, and I'll put it here.

Credits:
@rchtk, his post here gave me the idea for how to modify the images.
@flar2, He built the Elemental X kernel for this device, I merely made a small modification to his kernel to use 4 cores. In no way am I trying to steal and/or discredit his work.
The TWRP development team, they built the TWRP recovery for this device, I merely made a small modification to their recovery to use 4 cores. In no way am I trying to steal and/or discredit their work.

Feel free to ask me for help, If you have a favorite ROM/Kernel that you want to use, tell me and i'll modify it to use 4 cores.

Please click thanks if I helped you, it means a lot to me :)

Hey man I tried this method, and I can confirm that this works! Although it is slow, it's better than nothing I truly do appreciate your efforts. SCREW LG
 
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  • 238
    Read First: This method is relatively drastic, and will hurt device performance some. You should only use this as a last resort, if the more basic methods of fixing a soft brick didn't work (e.g, factory reset, flash stock firmware, etc.)​

    *Update 7/30: On my 6P, I found that the original kernel with this mod was using pretty much 1.5 cores, instead of all 4. People with the 5X were also reporting this, so I modified the images to utilize all 4 cores better. It helps performance a lot (able to beat stock 6P in some Antutu marks now, and play intensive games), try it out if you haven't yet!

    *Petition:
    I made a petition for Google to officially release and sign modified boot.imgs, so that people with locked bootloaders can fix their devices too. Check it out here. (I apologize for dumbing it down so much, I wanted to make sure everyone could understand it)

    *Changelog:

    • 8/26 - EX kernel for Android O uploaded.
    • 8/22 - Android O working, boot.img and source uploaded.
    • 8/08, 2nd Change - Added boot.img for 48C firmware (August security patch).
    • 8/08 - Updated EX kernel to version 4.1.2. This updated zip adds the CPU utilization patch to the init.elemntalx.rc, instead of removing the old init.angler.rc and copying the new init over. That should mean more compatibility with Roms/kernels that modify the init.angler.rc. I also modified the camera-daemon to use cpus 0-3 instead of 0-2, so hopefully this should make the a camera bit faster too.
    • 8/07 - Added boot.img for 1 core, just to see if it would work for devices that didn't work with the 4 core image.
    • 7/30, 2nd Change - Added universal EX zip, this zip should modify your kernel to use only 4 cores, and it should modify it to utilize all 4 cores. You can flash this over most ROMs and it should work. Also added a donation url, and this changelog.
    • 7/30 - Updated this fix to greatly improve performance. Before this fix, the device was only using 1 core for foreground tasks, now it will use all 4 cores. Also revamped OP, and added Marshmallow images.
    • 7/23- Created this fix, stock boot.img, twrp, and EX kernel added.


    *What this fix does, and how to apply it:

    The problem:
    The problem with most of the devices in a BLOD, is that a hardware failure related to the BIG cluster has occurred. This fix remedies the problem by disabling the BIG cores. Unfortunately, this does mean that you will take a performance hit. However, I am continually working on ways to improve the device's performance.

    The update: If anyone remembers device performance with the first fix, it was hurt a lot, however, after finding out that the device was only using 1 core for all foreground tasks, I modified the ramdisk to utilize all 4 cores more effectively, and it helps a lot.

    Requirements: For this fix to work, you need:
    • A brain
    • A computer
    • A bootlooping 5X with an unlocked bootloader/OEM unlocking enabled
    • The modified files of your choice.
    • Fastboot on your computer (preferably installed system wide). If you do not know what this is, or do not have it, look at this post. Answer yes to all of the prompts to install it.

    How to apply the fix:
    1. Boot your phone into bootloader (hold power and volume down).
    2. Connect your phone to the computer.
    3. Go to the folder where you have the modified files, then hold shift and right click in a blank space, click on "open command prompt here" in the menu that pops up.
    4. In the command prompt: type "fastboot flash boot [name of the file here]" and then press enter. If you're flashing TWRP, replace boot with recovery. (Linux users, make sure you're running as root)
      Edit: with the new universal EX zip, you don't have to flash the modified boot.img now, you can just flash TWRP, and then flash the EX zip, and everything should work.
    5. Boot up your phone, and hopefully it should work!


    *If your phone is bootloader locked/OEM locked:

    You can try to get your phone to boot long enough to enable OEM unlocking. Some users have reported success by freezing their phone for a bit, then booting it. Others have let their battery drain all the way, and then tried to boot their phone, but the most successful method seems to be heating up your phone (a lot).
    If you do attempt any of these methods, make sure you have time and patience, as it will take a long time.

    To enable OEM unlocking and unlock bootloader:
    1. Go to settings.
    2. Go to developer options, if you do not see that, go to "about phone", scroll to build number, and then tap it 7 times. You should now see developer options in settings.
    3. Once you're in developer options, click on "OEM unlocking" and accept the prompt.
    4. Now reboot your phone to bootloader, connect your phone to the computer, and type "fastboot flashing unlock" Your bootloader should now be unlocked.

    *Downloads:

    • Boot.img from Android O DP6: Download | Mirror. This Image is the from the first official release of Android O, and is modified to use 4 cores. As a bonus, it also disables forced encryption. Thank you to @xls654 for figuring out how to get Android O to work.
    • Boot.img from stock 48C, 7.1.2 firmware (August security patch): Download | Mirror. This Image is modified to use only 4 cores, and is modified to utilize the 4 cores more effectively. I have had multiple people on the 6p say that first boot takes a while after flashing this, so just wait about 20 minutes before you declare something is wrong with it.
    • Boot.img from stock 47Z, 7.1.2 firmware: Download | Mirror. This Image is modified to use only 4 cores, and is modified to utilize the 4 cores more effectively. I have had multiple people on the 6p say that first boot takes a while after flashing this, so just wait about 20 minutes before you declare something is wrong with it.
    • TWRP version 3.1.1: Download | Mirror. This TWRP image is modified to use only 4 cores.
    • EX kernel version 5.03, for Android O: Download | Mirror. EX kernel for Android Oreo, modified to use 4 cores. You must flash it over the 4 core boot.img for it to work.
    • EX kernel version 4.12, universal zip: Download | Mirror. This zip is modified to use only 4 cores, and it will also apply the speed fix. Flash this in TWRP. I highly recommend you flash this, as it improves device performance notably, and disables forced encryption. This kernel should work with almost any other ROM, and it applies the core utilization mod from the first image, thanks to AnyKernel.
    • Boot.img modified to use only 1 Core. Some people were reporting that the 4 core images weren't working for them, someone suggested that I make a 1 core version to see if that helps at all. Here it is: Download | Mirror

    For Marshmallow:
    • Boot.img from the latest 6.0.1 20K firmware: Download | Mirror. This boot.img is modified to use only 4 cores, and is modified to utilize those 4 cores more effectively. Untested as of now.
    • Ex kernel version 1.2.0 for Marshmallow: Download | Mirror. This is the latest EX kernel for marshmallow, it will keep the core utilization mod from the above image, and should work on almost any other ROM, thanks to any kernel. Untested as of now.


    *Source Code:

    • Source for 4 core Android O DP6: Source.


    *Tested custom ROMS/kernels

    you should be able to use almost any ROM with a stock based kernel, just flash the EX zip over it.

    If you have a custom ROM/kernel that worked for you, let me know and I'll put it up here.


    *To improve performance slightly:

    • Flash a custom kernel. I will upload more kernels as people request more, so stay tuned.
    • Flash a custom ROM. Once again, I will upload more as people request more, so stay tuned.
    • Overclock the little cores. It can slightly help offset the lost performance, on my 6P, I have mine overclocked to 1632MHz, and it works perfectly for me. Edit: I actually recommend not overclocking. Many people have reported their Little cores failing, so I would go for longevity on this device, and keep it at stock clocks, or even underclock it. The speed difference you get from overclocking is negligible anyways.
    • Disable animations in developer options. Seriously, as soon as I found out about this tweak, I've used it on ever single device I've owned, it helps a ton.


    *Credits:

    @rchtk, His post here gave me the idea for how to modify the images.
    @flar2, He built the Elemental X kernel for this device, I merely made a small modification to his kernel to use 4 cores. In no way am I trying to steal and/or discredit his work.
    The TWRP development team, they built the TWRP recovery for this device, I merely made a small modification to their recovery to use 4 cores. In no way am I trying to steal and/or discredit their work.
    @xls654, He found out how to get Android O working with 4 cores.


    *FAQs:

    • What's the password for TWRP/Why is TWRP asking for a password? - In android 7.0, Google added forced encryption to the data partition. To get around this, click cancel when TWRP asks you for a password, and then factory reset the device. Then you can flash EX kernel/Magisk to disable forced encryption.
    • Why am I getting an error when I try to flash the images? - Your bootloader is probably not unlocked, try running the command "fastboot flashing unlock", If you get an error there too, then you will have to enable OEM unlocking before you can continue.
    • It's not working for me, how do I fix it? - My only advice for that is: "Flash the stock firmware for whatever version image you're trying to flash, then reflash the images again" If you're stuck on the boot animation, wait at least 20 minutes before you declare it's not working. If none of that works, chances are you have a different problem.
    • Does EX kernel have the new speed fix? - Yep, the EX kernel zip should apply the 4 core fix, and the speed fix. It should also work with almost any ROM, including stock.


    I would like to help as many people as I can, however, I am much more likely to be able to easily help you/reply to your post if you clearly state your problem and the steps you attempted to fix it. I will be much less likely to reply to posts such as "omggg i flashed the image and my phone won't boot helppp" Please read through post first, I did not spend time typing up this OP for no one to read it. If I can see that you read through the OP and have attempted all the steps, then I will be much more willing to help you.

    I set up donations on my profile, for those of you who want to donate. I have spent countless hours modifying, flashing, testing, and helping, don't get me wrong, I love doing this and helping y'all out, but donations really keep me motivated to keep going, and donations also will help me fund new equipment and devices that will help further my android development. Every single donation is appreciated :) Donate to me here!

    If this guide helped you, please click thanks, it means a lot to me :)
    48
    Guys.. bad news.. my Nexus 5X just got hit with the BLOD. 😢

    Good news for everyone is I spent a bit of time tonight to first patch TWRP 3.2.1-0-FBE (File-Based Encryption support) image to be 4core, then made an AnyKernel2 zip which will patch the existing boot and recovery partitions on-device to add all the 4core fixes from @XCnathan32.

    Should work over any ROM, any custom kernel, recovery, etc., can be added in queue after ROM, root zip + custom kernel to patch it from TWRP or FlashFire (so good for OTAs), and simplifies the initial process greatly since you can now fastboot boot any 4core recovery.img and then adb sideload my AK2 zip to fix the likely newer recovery you already had on your device. 👍


    Edit: See my new thread for updated files + step-by-step instructions: https://forum.xda-developers.com/nexus-5x/general/tool-bootloop-death-blod-workaround-t3819497
    12
    Update: I added a universal EX zip, this zip should make your device only use 4 cores, and utilize all 4 cores, so there's no need for flashing a separate boot.img before you flash EX. Also, with this zip, you should be able to flash EX over almost any ROM, and it should work.

    I also added a donation URL to my profile, donations keep me motivated to keep going, and they will be used to help me fund equipment and devices to further advance my android development. Every single donation is appreciated :)
    11
    i tryed all your .img file but noone works with it the 8.0 android oreo version, we are waiting the big update for boot.img cores :) nice work bro :good:

    p.s. im in bootloop

    I'm working on 8.0 right now. Unfortunately it is a challenge due to the changes in android O, but I will try to get it working as fast as I can.
    9
    Update: Welp, for me, school is starting in a couple weeks :( Which means I have to do all my summer assignments (that I had the whole summer to do), in two weeks. Cross Country race season is also starting for me, so I will be less active as a result of those two things. I will try my best to keep maintaining this and helping you guys though.

    Also, I am working on an application to make this process easy for beginners. I wanted to learn C#, so I figured this was a good way to help me learn it. Expect that to come later this week/next week (depending on how lazy I am).

    P.S: HUGE thank you to everyone who donated!! The support of this community is mind-blowing, and it means a lot to me that people appreciate my work enough to donate. Once again, thank you so much :)