Flash LG G8 Stock firmware with LGUP

[johnnycm77]

Unfortunately I have flashed Lineage OS badly on my LG G8s and it made a brick, it does not go beyond the logo (LG G8s ThinQ). It only turns on in EDL mode or Download mode (although here it is not recognized by my PC).

They help me? I would like to flash the KDZ but I can't find a way and I already have all the drivers installed.

I'm in the same situation except I was trying to unlock my bootloader so I could root and my phone never went into fastboot. I tried flashing anything. Now all my phone does is blink. I can go into edl and download. My pcsays it sees it in edl mode but when I flash it does nothing. Same with download mode.

 

[mangojain]

I'm in the same situation except I was trying to unlock my bootloader so I could root and my phone never went into fastboot. I tried flashing anything. Now all my phone does is blink. I can go into edl and download. My pcsays it sees it in edl mode but when I flash it does nothing. Same with download mode.

In edl mode, flash xbl, xbl_config, boot, abl and laf files and then see if you can use LGUP in the download mode to flash your full kdz file

 

[johnnycm77]

In edl mode, flash xbl, xbl_config, boot, abl and laf files and then see if you can use LGUP in the download mode to flash your full kdz file

I really screwed my phone up now. I've gotten so stressed out over this and angry at my phone and decided I'd like to see what erase entire flash would do. Let's just say it wasn't one of my better ideas. I believe I've killed my phone.

 

[mangojain]

I really screwed my phone up now. I've gotten so stressed out over this and angry at my phone and decided I'd like to see what erase entire flash would do. Let's just say it wasn't one of my better ideas. I believe I've killed my phone.

I've been in almost the same spot (didn't erase the fsg partition thankfully) . . . just try to flash most of the files from the kdz except the large ones like OP and userdata, at some point your phone should allow LGUP to work in the download mode. Without fsg your sim will not work, but can come to that later . . .
Edit : if you saved a backup of the fsg, like you should have, there is no problem, just flash it back

 

[johnnycm77]

I've been in almost the same spot (didn't erase the fsg partition thankfully) . . . just try to flash most of the files from the kdz except the large ones like OP and userdata, at some point your phone should allow LGUP to work in the download mode. Without fsg your sim will not work, but can come to that later . . .
Edit : if you saved a backup of the fsg, like you should have, there is no problem, just flash it back

When I click manage partition it pulls up nothing but a blank screen where there usel to be bin files. My Sim is in my old v20 now.

 

[johnnycm77]

In edl mode, flash xbl, xbl_config, boot, abl and laf files and then see if you can use LGUP in the download mode to flash your full kdz file

Ive lost download mode nowl. All I can do is edl but all my partitions are gone in qfil now

 

[mangojain]

Ive lost download mode nowl. All I can do is edl but all my partitions are gone in qfil now

OK, so flash each and every file extracted from the kdz. It should get you back into download mode to use LGUP

 

[johnnycm77]

OK, so flash each and every file extracted from the kdz. It should get you back into download mode to use LGUP

The only problem is when I go into partition manager its blank now. Me being stupid decided to click on erase entire flash.

 

[jhonybd]

LG_G8_ThinQ_LMG820N ONLY 9008 PORT SHOW
THIS BRICK PHONE
HOW TO FLASHING 9008 PORT EDL MODE..?
NEED HELP

 

[davembg]

Does anyone have a good source for and OPEN_US firmware for the LG LM850UM?
I cross-flashed to OPEN_CAN and my IMEI got zeroed.

 

[blaze2051]

sprint sucks because they dont shahre their kdz firmware

 

[AsItLies]

sprint sucks because they dont shahre their kdz firmware

Yes that is very true. It's clearly a good idea to know this ahead of time, and it's also true for at&t.

The very first thing anyone with a carrier variant device, that doesn't have the kdz available, is to back up the entire rom.

The utility I use to do that is bkerler edl python utilities. There's a github page for them. He even created a flashable iso which boots ubuntu and has all dependencies resolved and the proper version of python installed.

I've reinstalled my sprint firmware 4 or 5 times in the last 2 months, just going back to stock after having messed around with flashing kor a11 or something else.

If you have no kdz, you have to do this. And keep in mind, there are partitions on the phone that are specific to that device, they have things like imei and s/n in them, and are not 'interchangeable' like a kdz is.

Sorry u have these issues, but at least now you know, in the future, back up what there is no kdz for.

 

[blaze2051]

Was try to cross flash with Canadian firmware

Sent from my SM-G975W using Tapatalk

im in the same boat, i was doing crossflash and it didnt finish and now i have rapid bootloop and i have edl and download mode but qfil sahara protocol error

 

[blaze2051]

I've been in almost the same spot (didn't erase the fsg partition thankfully) . . . just try to flash most of the files from the kdz except the large ones like OP and userdata, at some point your phone should allow LGUP to work in the download mode. Without fsg your sim will not work, but can come to that later . . .
Edit : if you saved a backup of the fsg, like you should have, there is no problem, just flash it back

how can i flash my backup files when i cant get passed the sahara protocol error

 

[blaze2051]

Yes that is very true. It's clearly a good idea to know this ahead of time, and it's also true for at&t.

The very first thing anyone with a carrier variant device, that doesn't have the kdz available, is to back up the entire rom.

The utility I use to do that is bkerler edl python utilities. There's a github page for them. He even created a flashable iso which boots ubuntu and has all dependencies resolved and the proper version of python installed.

I've reinstalled my sprint firmware 4 or 5 times in the last 2 months, just going back to stock after having messed around with flashing kor a11 or something else.

If you have no kdz, you have to do this. And keep in mind, there are partitions on the phone that are specific to that device, they have things like imei and s/n in them, and are not 'interchangeable' like a kdz is.

Sorry u have these issues, but at least now you know, in the future, back up what there is no kdz for.

can this be used to flash backup files since i cant access partition manager due to a bad crossflash kdz

 

[blaze2051]

Yes that is very true. It's clearly a good idea to know this ahead of time, and it's also true for at&t.

The very first thing anyone with a carrier variant device, that doesn't have the kdz available, is to back up the entire rom.

The utility I use to do that is bkerler edl python utilities. There's a github page for them. He even created a flashable iso which boots ubuntu and has all dependencies resolved and the proper version of python installed.

I've reinstalled my sprint firmware 4 or 5 times in the last 2 months, just going back to stock after having messed around with flashing kor a11 or something else.

If you have no kdz, you have to do this. And keep in mind, there are partitions on the phone that are specific to that device, they have things like imei and s/n in them, and are not 'interchangeable' like a kdz is.

Sorry u have these issues, but at least now you know, in the future, back up what there is no kdz for.

im trying to flash or create xml with livecd but idk if im doing it correct im using edl--help but does seem to do anything

 

[felixpaz1992]

I wonder if you can open the band "network lock" of the Xfinity mobile operator of a LG G8 ThinQ G820qm5 using the dump of another equipment of the same model and operator but unlocked to use any sim

 

[ClownWorld]

Well, to use the exploit you'll need to be on Android 10. It's practically finished and @Inherent just needs some more donations to pay the guy who did it. He really put tons of work into it and solved all sorts of problems, and we definitely to pay the minimum amount we said :/ anyway, if you buy an unactivated at&t on Android 9 you won't be able to root and then update. In no scenario will you be able to cross flash; after bl unlock we can dump partitions of operator models and then flash them on phones of the same carrier.

Still not possible to root, bootloader unlock, carrier switch with lg g8x thinq android 9.0 AT&T?

 

[googleygoggles]

Okay guys, after so much pain and suffering trying to get my LG G8 back to stock, let me tell you. Forget this method. It's worked maybe 1/5 times for me.
Just follow this much simpler guide instead: https://forum.xda-developers.com/t/guide-lgup-for-all-no-root-needed.3967858/
Which worked first try. So much time wasted...