Related
Edit: The Verizon repair assistant put my phone back to PHE build [100% battery].
Man I knew I shouldn't have tried to root after all this time. I'm not sure which firmware my phone was on [it was the 60% battery update], either PHE or PK1, as it displays in recovery right now. I tried to follow Lrileys modification of freeza's root guide, which neither of them specify a base firmware to go off of, lol.
Anyways, flashing the userdebug sprint firmware with ODIN 3.12.4 failed and my device softbricked. It boots into recovery and download mode.
I have tried factory reset, wiping cache partition, flashing an AP PH1 firmware, and repair through Verizon software/upgrade assistant.
The closest I've gotten to restoring it was with VUA, however when I go to the repair assistant page, it tells me to put phone in download mode [which I do] but the repair button stays greyed out.
Any help would be greatly appreciated.
Edit: The Verizon Upgrade Assistant wasn't starting, saying it was missing mfc90.dll. Well I downloaded the dll, dropped it in the folder, and was able to get UA to recognize phone. Repair assistant is downloading software right now, we'll see how it goes.
IF you would have read there is no root for the PHE.. you also could have checked this via phone settings before you rooted.
You can also use the verizon app to restore your firmware from even the most bricked of phones. Also in in this forum..(looks like you might have tried this?)
I wouldnt even bother at this point, go get your temp phone =]
ars0n said:
IF you would have read there is no root for the PHE.. you also could have checked this via phone settings before you rooted.
You can also use the verizon app to restore your firmware from even the most bricked of phones. Also in in this forum..(looks like you might have tried this?)
I wouldnt even bother at this point, go get your temp phone =]
Click to expand...
Click to collapse
Well the repair assistant seems to be working atm, so hopefully it goes through without any problems. Neither of these threads in the original post mentioned anything about incompatible firmware though [https://forum.xda-developers.com/verizon-note-7/how-to/root-vzw-note-7-t3448711 and https://forum.xda-developers.com/sprint-note-7/how-to/root-super-leaky-bros-sprint-galaxy-t3447202]. I suppose I should have known trying to use a method that dated.
You shouldn't be messing with this stuff if you don't even know how to see what version your on and read.
very helpful
jjayzx said:
You shouldn't be messing with this stuff if you don't even know how to see what version your on and read.
Click to expand...
Click to collapse
Thank you for the gratuitous reply. Despite your sour attitude I was able to return to PHE through VUA. I was running PK1 firmware, however, again, neither root method specified/recommended/listed a base or stock firmware to flash from [or even posted what they were running]. This place used to be helpful.
This phone was given to me with marshmellow and im having the issue of not being able to update google play service among other things. the other issues im having might be the effect of the google play service. i just wanted to know if its worth attempting the downgrade on lollipop
shatheone said:
This phone was given to me with marshmellow and im having the issue of not being able to update google play service among other things. the other issues im having might be the effect of the google play service. i just wanted to know if its worth attempting the downgrade on lollipop
Click to expand...
Click to collapse
Depending on the underlying issue, you may still encounter the Play Services issue on Lollipop as you have on Marshmallow.
First, see if you can work the issue out on your current system.
- Delete cache and Data on Play Services.
- reset app preferences and reset default apps in the menu in the Apps folder in Settings.
- delete your Google account and re-install it.
- use LGUP-NEW to reinstall your Marshmallow rom (H81220). Check out this site for some H812 stock roms:
https://lg-firmwares.com/lg-h812-firmwares/
scroll down to the firmwares list and install the correct stock kdz - carrier and version
You can downgrade to Lollipop (H81210) using LGUP-NEW - frankly I haven't noticed a lot of difference between them but does have the current advantage of being rootable. Some members report better battery life but you will lose some security updates.
sdembiske said:
Depending on the underlying issue, you may still encounter the Play Services issue on Lollipop as you have on Marshmallow.
First, see if you can work the issue out on your current system.
- Delete cache and Data on Play Services.
- reset app preferences and reset default apps in the menu in the Apps folder in Settings.
- delete your Google account and re-install it.
- use LGUP-NEW to reinstall your Marshmallow rom (H81220). Check out this site for some H812 stock roms:
https://lg-firmwares.com/lg-h812-firmwares/
scroll down to the firmwares list and install the correct stock kdz - carrier and version
You can downgrade to Lollipop (H81210) using LGUP-NEW - frankly I haven't noticed a lot of difference between them but does have the current advantage of being rootable. Some members report better battery life but you will lose some security updates.
Click to expand...
Click to collapse
thanks for the reply, i actually did all of those things, including a factory reset. i will try to reinstall using lg up, maybe something in the stock image got corrupted? i learned that even if my phone boot loops, it wont be repaired as the serial number is out of range. so i might hold on to it until theres a good custom available
shatheone said:
thanks for the reply, i actually did all of those things, including a factory reset. i will try to reinstall using lg up, maybe something in the stock image got corrupted? i learned that even if my phone boot loops, it wont be repaired as the serial number is out of range. so i might hold on to it until theres a good custom available
Click to expand...
Click to collapse
Yes, very possible that something got corrupted. Definitely try a re-install of your stock kdz with LGUP-NEW.
If you haven't checked out steadfasterX's bootloader unlock thread, you will have to in order to install any custom rom with some assurance of success:
https://forum.xda-developers.com/g4/general/bl-unlock-unlock-bootloader-proof-t3648288
You might as well get started now as it won't be long before he publishes. You will have to install his SALT program and create a backup before proceeding to unlock your bootloader preparatory to installing any custom rom:
https://forum.xda-developers.com/g4/general/tool-salt-lg-revolution-t3717864
sdembiske said:
Yes, very possible that something got corrupted. Definitely try a re-install of your stock kdz with LGUP-NEW.
If you haven't checked out steadfasterX's bootloader unlock thread, you will have to in order to install any custom rom with some assurance of success:
https://forum.xda-developers.com/g4/general/bl-unlock-unlock-bootloader-proof-t3648288
You might as well get started now as it won't be long before he publishes. You will have to install his SALT program and create a backup before proceeding to unlock your bootloader preparatory to installing any custom rom:
https://forum.xda-developers.com/g4/general/tool-salt-lg-revolution-t3717864
Click to expand...
Click to collapse
i couldnt get LG up to recognize my phone even after taking out the battery, so ill have to find another usb cable and try that. i see two different kdzs for my software version so ill have to research the correct one. and im not planning one unlocking the bootloader until theres a better way. id sell it before risking a brick
shatheone said:
i couldnt get LG up to recognize my phone even after taking out the battery, so ill have to find another usb cable and try that. i see two different kdzs for my software version so ill have to research the correct one. and im not planning one unlocking the bootloader until theres a better way. id sell it before risking a brick
Click to expand...
Click to collapse
IF, you'd actually read steadfasterX's thread and in particular his latest update (last page on the thread, currently) ... you would realize there had already been a proof of a successful unlock of an H812. I suspect your phone has been screwed up by somebody who didn't know what they were doing in the first place. No one has done more work in this area and had more successes than steadfasterX - good luck for waiting for a better way or getting much trying to sell it - check ebay and see the prices - LOL.
sdembiske said:
IF, you'd actually read steadfasterX's thread and in particular his latest update (last page on the thread, currently) ... you would realize there had already been a proof of a successful unlock of an H812. I suspect your phone has been screwed up by somebody who didn't know what they were doing in the first place. No one has done more work in this area and had more successes than steadfasterX - good luck for waiting for a better way or getting much trying to sell it - check ebay and see the prices - LOL.
Click to expand...
Click to collapse
i didnt mean any disrespect, but the process is still in alpha state. this is my only phone currently so i dont want to risk bricking it. i have no reason for unlocking bootloader when there isnt enough rom support to justify doing so
shatheone said:
i didnt mean any disrespect, but the process is still in alpha state. this is my only phone currently so i dont want to risk bricking it. i have no reason for unlocking bootloader when there isnt enough rom support to justify doing so
Click to expand...
Click to collapse
The risk of bricking your phone has been minimized with steadfasterX's process - he has had a couple of successful unlocks of an H812 now and when he publishes it for the public, the risk will be minimized as much as it can be in any unlock case.
With respect to your phone not being recognized by LGUP-NEW. Make sure you have installed the LGMobileDriver_WHQL_Ver_4.2.0 available for download from the US LG site - the Windows driver will give you problems.
sdembiske said:
The risk of bricking your phone has been minimized with steadfasterX's process - he has had a couple of successful unlocks of an H812 now and when he publishes it for the public, the risk will be minimized as much as it can be in any unlock case.
With respect to your phone not being recognized by LGUP-NEW. Make sure you have installed the LGMobileDriver_WHQL_Ver_4.2.0 available for download from the US LG site - the Windows driver will give you problems.
Click to expand...
Click to collapse
well i wouldnt care doing it if there was more rom support, i dont see a point in unlocking at this point. if im missing a benefit of unlocking right now, enlighten me. and thats the driver i already have installed
shatheone said:
well i wouldnt care doing it if there was more rom support, i dont see a point in unlocking at this point. if im missing a benefit of unlocking right now, enlighten me. and thats the driver i already have installed
Click to expand...
Click to collapse
One benefit might be fixing your screwed up phone. Still didn't read the OP I guess as you were advised to in steadfasterX's bootloader unlock thread. Here's an idea ... before making summary judgements with little or no knowledge, perhaps you should check with the member that is sited in the "proof" for the H812 and post your questions there for the Roms he has tried. My understanding was that he was on Lineage for Nougat - the most popular downloaded custom rom for .... are you ready ... the H815/H811 - here's an idea ... why don't you check out ALL the roms that are for the H815/H811 in the Android Development section ... hmm ... really?
sdembiske said:
One benefit might be fixing your screwed up phone. Still didn't read the OP I guess as you were advised to in steadfasterX's bootloader unlock thread. Here's an idea ... before making summary judgements with little or no knowledge, perhaps you should check with the member that is sited in the "proof" for the H812 and post your questions there for the Roms he has tried. My understanding was that he was on Lineage for Nougat - the most popular downloaded custom rom for .... are you ready ... the H815/H811 - here's an idea ... why don't you check out ALL the roms that are for the H815/H811 in the Android Development section ... hmm ... really?
Click to expand...
Click to collapse
if you took 10 seconds, you would see i actually posed in that thread. and all they did was direct me to the OP which says nothing about lineageos working for h812, or that the h815/ or h811 roms work for this variant. all it says is that i can flash nougat based roms. so the thread isnt too helpful, im not sure why you think it is.
shatheone said:
i didnt mean any disrespect, but the process is still in alpha state. this is my only phone currently so i dont want to risk bricking it. i have no reason for unlocking bootloader when there isnt enough rom support to justify doing so
Click to expand...
Click to collapse
Hey man, i'm agreeing with you for most of this...
I'm also not going to risk anything until 10 H812 users have successfully unlocked bootloader and flashed a custom rom (one thats intended for h815 or h811) with steadfasterx's method. Maybe you can flash H815 custom roms once the bootloader is unlocked... but just to be safe, let's flash other stock carrier firmwares in the meantime...... in the end no matter what anyone says, its your phone at risk...
Member TheLatios381 and I were asking same question here:https://forum.xda-developers.com/g4...10-q2-2017-t3567402/post75742903#post75742903 because no answer to our question on steadfasterx's thread...
Hello all,
-I bought a 'refurbished' LG G4 online (claimed to be H815), but when I got it & checked the motherboard inside, it's VS986 instead.
Currently it's on H815 v10h (Lollipop), with ARB v2, and Baseband is MPSS.BO.2.5.c3-00070-M8992FAAAANAZM-1.19025.1
-What's is the best option I have (which ROM to flash)? I'm from Malaysia & I need GSM for 2G/3G capability (AFAIK Verizon's VS986 uses CDMA)*.
Please advise, thank you.
*EDIT: I entered Service Menu & found that several GSM & WCDMA modes are supported, but none of LTE modes is available.
Musafir_86 said:
Hello all,
-I bought a 'refurbished' LG G4 online (claimed to be H815), but when I got it & checked the motherboard inside, it's VS986 instead.
Currently it's on H815 v10h (Lollipop), with ARB v2, and Baseband is MPSS.BO.2.5.c3-00070-M8992FAAAANAZM-1.19025.1
-What's is the best option I have (which ROM to flash)? I'm from Malaysia & I need GSM for 2G/3G capability (AFAIK Verizon's VS986 uses CDMA)*.
Please advise, thank you.
*EDIT: I entered Service Menu & found that several GSM & WCDMA modes are supported, but none of LTE modes is available.
Click to expand...
Click to collapse
The problem with Frankensteins like this is nobody knows what EXACTLY they did to make it look like a h815.
First thing to try is checking the ARB (Antirollback, see my sig) and if you are one of the 1% of lucky users then you may see "nonfusing device" instead of an ARB level.
Assuming that you did that already (as u mentioned ARB2) u are screwed.
There is no valid way to get to a good result here.
Your main issue is that the modem partition must be a vs986 one - or at least a vs986 compatible one as the ARB also takes place in that partition.
Second, if you cannot change the modem partition u might not be able to get 2G/3G as you already found out.
unlocking the device won't help either as the main issue you have relies on the the modem (partition) and even when flashing a vs986 ROM or any other it might never work.
Last - but not least - whatever you do or plan to do: kee my first sentence in mind. Each step you do can easily hard brick your device.
Ofc you can use QFIL to likely bring it back to life (the G4's are really hard to brick until an unusable state) but for this you need the extra tools, knowledge and time to learn.
sorry but there is nothing much you can do other then request your money back as you were tricked.
if you can't I may would try getting another modem partition to work with but doing that requires also a lot of time to learn how to use SALT to extract KDZs, identify the ARB of the modem partition properly (so you do not increase the ARB level by flashing a wrong modem partition) and so on..
gl
.-
steadfasterX said:
The problem with Frankensteins like this is nobody knows what EXACTLY they did to make it look like a h815.
First thing to try is checking the ARB (Antirollback, see my sig) and if you are one of the 1% of lucky users then you may see "nonfusing device" instead of an ARB level.
Assuming that you did that already (as u mentioned ARB2) u are screwed.
There is no valid way to get to a good result here.
Your main issue is that the modem partition must be a vs986 one - or at least a vs986 compatible one as the ARB also takes place in that partition.
Second, if you cannot change the modem partition u might not be able to get 2G/3G as you already found out.
unlocking the device won't help either as the main issue you have relies on the the modem (partition) and even when flashing a vs986 ROM or any other it might never work.
Last - but not least - whatever you do or plan to do: kee my first sentence in mind. Each step you do can easily hard brick your device.
Ofc you can use QFIL to likely bring it back to life (the G4's are really hard to brick until an unusable state) but for this you need the extra tools, knowledge and time to learn.
sorry but there is nothing much you can do other then request your money back as you were tricked.
if you can't I may would try getting another modem partition to work with but doing that requires also a lot of time to learn how to use SALT to extract KDZs, identify the ARB of the modem partition properly (so you do not increase the ARB level by flashing a wrong modem partition) and so on..
gl
.-
Click to expand...
Click to collapse
-Thanks for your reply.
-About returning & requesting a refund, I think it'll be hard as I already damaged the warranty sticker over one of the screws while trying to check the board.
-If we ignore the modem issue for now (maybe use it as WiFi-only device), then what's the best ROM I could flash? I hope at least Marshmallow so it'll last longer as more & more apps are targetting higher Android API levels.
-BTW, I just tried flashing VS9862BA_00_0525_ARB02.kdz but LG UP says "KDZ file is invalid". On another note, while in download mode, I just noticed it says:
Code:
USER S0.0 AS0.0 B91 UHS
S U LG-H810 05.1 Hrev_10
H81010o
-So, now it also has AT&T's H810 pieces inside too?
-BTW, sorry for PM'ing you earlier; I didn't notice your signature (even though you put it in big, red fonts!).
Musafir_86 said:
-Thanks for your reply.
-About returning & requesting a refund, I think it'll be hard as I already damaged the warranty sticker over one of the screws while trying to check the board.
-If we ignore the modem issue for now (maybe use it as WiFi-only device), then what's the best ROM I could flash? I hope at least Marshmallow so it'll last longer as more & more apps are targetting higher Android API levels.
-BTW, I just tried flashing VS9862BA_00_0525_ARB02.kdz but LG UP says "KDZ file is invalid". On another note, while in download mode, I just noticed it says:
Code:
USER S0.0 AS0.0 B91 UHS
S U LG-H810 05.1 Hrev_10
H81010o
-So, now it also has AT&T's H810 pieces inside too?
-BTW, sorry for PM'ing you earlier; I didn't notice your signature (even though you put it in big, red fonts!).
Click to expand...
Click to collapse
-Okay, now I have successfully flashed VS9862BA_00_0525_ARB02.kdz by extracting the DZ file & flashing it directly! :good:
However, it seems Android FRP (Firmware Reset Protection) has been triggered; need to figure on how to bypass this while on 2BA firmware.....
Musafir_86 said:
-Thanks for your reply.
-About returning & requesting a refund, I think it'll be hard as I already damaged the warranty sticker over one of the screws while trying to check the board.
-If we ignore the modem issue for now (maybe use it as WiFi-only device), then what's the best ROM I could flash? I hope at least Marshmallow so it'll last longer as more & more apps are targetting higher Android API levels.
-BTW, I just tried flashing VS9862BA_00_0525_ARB02.kdz but LG UP says "KDZ file is invalid". On another note, while in download mode, I just noticed it says:
-Okay, now I have successfully flashed VS9862BA_00_0525_ARB02.kdz by extracting the DZ file & flashing it directly! :good:
However, it seems Android FRP (Firmware Reset Protection) has been triggered; need to figure on how to bypass this while on 2BA firmware.....
Click to expand...
Click to collapse
Warranty or not i would return it as its not what you had paid for. But up to you and ofc as you flashed a kdz on it you would need to get it back to the state jt was before..
You could unlock and flash nougat, oreo, pie but as with flashing the vs986 kdz/dz nothing comes without a risk ofc. Especially on Frankensteins!
The good is that you likely can revert UsU if you ever want to as you have a fusing device.
Sent from my OnePlus 7T Pro using XDA Labs
Does anyone know where I could find the appropriate kdz file for the verizon unlocked version of this phone? Thank you
leopard_fist said:
Does anyone know where I could find the appropriate kdz file for the verizon unlocked version of this phone? Thank you
Click to expand...
Click to collapse
you could just use google and type in 'LG G8 firmware'... you'll find it in the first link that comes up.
Before I try rooting again, can someone tell me, or point me to a resource that explains, how I can back things up, so that if something goes wrong, I can start back over from square one? I can't make a nandroid backup because I don't have twrp. I guess a proper kdz would do it. Is there some sort of device backup in qfil?
thanks very much!
leopard_fist said:
Before I try rooting again, can someone tell me, or point me to a resource that explains, how I can back things up, so that if something goes wrong, I can start back over from square one? I can't make a nandroid backup because I don't have twrp. I guess a proper kdz would do it. Is there some sort of device backup in qfil?
thanks very much!
Click to expand...
Click to collapse
you can back up every partition using qfil
leopard_fist said:
Before I try rooting again, can someone tell me, or point me to a resource that explains, how I can back things up, so that if something goes wrong, I can start back over from square one? I can't make a nandroid backup because I don't have twrp. I guess a proper kdz would do it. Is there some sort of device backup in qfil?
thanks very much!
Click to expand...
Click to collapse
you absolutely don't need to back up every file because you have the kdz available. There are really just a handful of partitions that identify that phone you should backup; ftm, fsg, modem, modemst1 and modemst2 (both a and b sides if the partition has a and b). (these partitions have your imei / sn in them).
some additional partitions you could also backup; abl, laf, boot, xbl, vbmeta. But, keep in mind, because the kdz is available, you can use the kdz extractor utilities to get those partitions from it.
those that need full backups are those that have sprint and at&t phones, as there are no kdz available for them.
im on the same boat, i have the g820um sprint and i messed and never backup anything up, i somehow ended flashing what i thought was sprint backup files but turns out it was att backup files it worked and got my phone working again BUT twrp cant flash or erase anything and my imei is zeroed out but i dont care about that, what i do care is getting some other rom flashed like GSI or LOS android 10 no higher
Hello, could someone PLEASE provide me with a stock or source for stock firmware for the AT&T LG G8 Thinq (LMG820UM). I've looked everywhere and can only find the U.S. Cellular, Verizon, Sprint, and T-mobile versions (everything except what I exactly need )!!!! The carrier's already unlocked. I wanna unlock the bootloader, flash custom ROMs like LineageOS (and TWRP) and root it and be able to revert back and LOCK the bootloader safely. I have LGup and other tools (though I don't know exactly what everything's for, such as firehose and other bootthings). I don't think cross flashing works and I don't want to do it anyway. Thanx!
PHANX0M said:
Hello, could someone PLEASE provide me with a stock or source for stock firmware for the AT&T LG G8 Thinq (LMG820UM). I've looked everywhere and can only find the U.S. Cellular, Verizon, Sprint, and T-mobile versions (everything except what I exactly need )!!!! The carrier's already unlocked. I wanna unlock the bootloader, flash custom ROMs like LineageOS (and TWRP) and root it and be able to revert back and LOCK the bootloader safely. I have LGup and other tools (though I don't know exactly what everything's for, such as firehose and other bootthings). I don't think cross flashing works and I don't want to do it anyway. Thanx!
Click to expand...
Click to collapse
Haven't seen anyone post their qfil backup of ATT rom, but it may be around. Yeah you won't find a kdz file of att rom because att doesn't allow that publicly.
Do you have att now? I'm guessing from what you say that you do, but you would like a kdz so you can go back if needed?
If you do have att, use qfil to back up ea partition individually, or use (I prefer) the bkerler edl utilities (search google), they take some effort to get up and running, but do a great job once done.
If u don't have att now... why would u want it? U may want to use them as a carrier but I'm pretty sure they still check the device imei, and if it's not one sold by them, some things *may* be restricted. I don't use them, only what I've read from others.
maybe you could explain better exactly what you want to do.
Yeah I have the AT&T phone now, and I want the kdz but don't know how to extract that ) :
And what do you mean they don't have it publicly? What if I extract it and post it?
Do you know anywhere where I could find them? I have and android 10 one with a broken screen (which I use Vysor for) and a working android 11 one.
PHANX0M said:
Yeah I have the AT&T phone now, and I want the kdz but don't know how to extract that ) :
Click to expand...
Click to collapse
you can't extract the kdz, that's not possible. You'll never find an ATT or Sprint kdz, they are simply not available, never will be, never have been.
The only thing you can do is back up what you currently have. Using qfil (look in guides section and you'll find how to set that up and use it) is probably the simplest option. You'll have to back up ea partition, and be sure to name them appropriately, as the back up doesn't do that.
Once you've done that, assuming the sim is unlocked, you can do other things you mention you want. But if the sim is not unlocked, you have to do that first, because flashing a different rom does not unlock it.
good luck
AsItLies said:
you can't extract the kdz, that's not possible. You'll never find an ATT or Sprint kdz, they are simply not available, never will be, never have been.
The only thing you can do is back up what you currently have. Using qfil (look in guides section and you'll find how to set that up and use it) is probably the simplest option. You'll have to back up ea partition, and be sure to name them appropriately, as the back up doesn't do that.
Once you've done that, assuming the sim is unlocked, you can do other things you mention you want. But if the sim is not unlocked, you have to do that first, because flashing a different rom does not unlock it.
good luck
Click to expand...
Click to collapse
So if I flash something custom, and then flash the backed up EA partition, it'll have the AT&T ROM/firmware again? I assume the bootloader has to be unlocked for this?
PHANX0M said:
So if I flash something custom, and then flash the backed up EA partition, it'll have the AT&T ROM/firmware again? I assume the bootloader has to be unlocked for this?
Click to expand...
Click to collapse
You'll have to flash back all the att partitions, not just some part of them. The device won't boot otherwise. And no, the boot loader does not have to be unlocked. Look in the guides section for the 'cross flashing' guide, it will explain what you need to do to make that happen, and you'll need a kdz you want to crossflash to. If you decide to x flash to a stock rom.
If all you wan to do is a custom rom, make sure the version of whatever rom you have, including if it's the att one, matches with the custom rom you want to use.
One note though re custom roms on LG devices; you will never be able to have Volte. That's an issue for US people especially, and other countries are getting there also.
LG, in it's infinite wisdom, has their ims stack (needed for volte to work) all over the rom, people have tried to port it, but it's a proprietary implementation, and has not, and probably never will be, ported. So, if you need volte, then your only option is a stock LG rom.
There's only ONE firehose for LG G8 Thinq all models, right? (If I even need to use that thing)
What are the EXACT things I have to back up to be able to revert back to AT&T ROM/Firmware?
So I know the T-Mobile version doesn't work with VoLTE (I've tried it myself and customer service told me I had to have them disable 3G blocker). But will the factory unlocked ROM work with it on an AT&T phone?
Even if I can't do this, is there ANY other way to go back to AT&T stock ROM/Firmware if I flash something else?
AsItLies said:
You'll have to flash back all the att partitions, not just some part of them. The device won't boot otherwise. And no, the boot loader does not have to be unlocked. Look in the guides section for the 'cross flashing' guide, it will explain what you need to do to make that happen, and you'll need a kdz you want to crossflash to. If you decide to x flash to a stock rom.
If all you wan to do is a custom rom, make sure the version of whatever rom you have, including if it's the att one, matches with the custom rom you want to use.
One note though re custom roms on LG devices; you will never be able to have Volte. That's an issue for US people especially, and other countries are getting there also.
LG, in it's infinite wisdom, has their ims stack (needed for volte to work) all over the rom, people have tried to port it, but it's a proprietary implementation, and has not, and probably never will be, ported. So, if you need volte, then your only option is a stock LG rom.
Click to expand...
Click to collapse
There's only ONE firehose for LG G8 Thinq all models, right? (If I even need to use that thing)
What are the EXACT things I have to back up to be able to revert back to AT&T ROM/Firmware?
So I know the T-Mobile version doesn't work with VoLTE (I've tried it myself and customer service told me I had to have them disable 3G blocker). But will the factory unlocked ROM work with it on an AT&T phone?
Even if I can't do this, is there ANY other way to go back to AT&T stock ROM/Firmware if I flash something else?
PHANX0M said:
There's only ONE firehose for LG G8 Thinq all models, right? (If I even need to use that thing)
What are the EXACT things I have to back up to be able to revert back to AT&T ROM/Firmware?
So I know the T-Mobile version doesn't work with VoLTE (I've tried it myself and customer service told me I had to have them disable 3G blocker). But will the factory unlocked ROM work with it on an AT&T phone?
Even if I can't do this, is there ANY other way to go back to AT&T stock ROM/Firmware if I flash something else?
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Yes there's only one firehose file, and it does need to be used to when using Qfil. And you need to use Qfil to back up ALL PARTITIONS (not just some, all).
I can't help with specific carrier requirements, I only have used Mint. You'll have to ask the carrier what will and won't work.
No, there is no way to go back to att stock firmware. Period. No Other Way than whats already been indicated, from a back up.
AsItLies said:
Yes there's only one firehose file, and it does need to be used to when using Qfil. And you need to use Qfil to back up ALL PARTITIONS (not just some, all).
I can't help with specific carrier requirements, I only have used Mint. You'll have to ask the carrier what will and won't work.
No, there is no way to go back to att stock firmware. Period. No Other Way than whats already been indicated, from a back up.
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Thank you for all the information thus far. If I restore the backup it can be completely as it was before and functional, including all data and everything? Do I have to unlock bootloader for this? And can I restore a backup from another phone (of the same model)?
Also, if I use the OPEN_CA ROM it'll let me use VoLTE?
Sorry, I'm only used to working with Xperia . Flashtool with Xperifirm was so much easier
PHANX0M said:
Thank you for all the information thus far. If I restore the backup it can be completely as it was before and functional, including all data and everything? Do I have to unlock bootloader for this? And can I restore a backup from another phone (of the same model)?
Also, if I use the OPEN_CA ROM it'll let me use VoLTE?
Sorry, I'm only used to working with Xperia . Flashtool with Xperifirm was so much easier
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If you restore the backup the phone should then be back to 'stock'. The data partition backup would be probably in excess of 40 gig, no one backs those up.
No, the bootloader only needs to be unlocked if you want root access, this doesn't require root.
Volte depends on numerous things, 1 obviously being that the phone is capable of it, then the carrier has to have that capability, and it has to allow your specific device to use it on their network. I haven't used the open_ca rom so can't say, but have used the us_open in the States, and with Mint mobile it has definitely worked, as has vowifi.
good luck
AsItLies said:
If you restore the backup the phone should then be back to 'stock'. The data partition backup would be probably in excess of 40 gig, no one backs those up.
No, the bootloader only needs to be unlocked if you want root access, this doesn't require root.
Volte depends on numerous things, 1 obviously being that the phone is capable of it, then the carrier has to have that capability, and it has to allow your specific device to use it on their network. I haven't used the open_ca rom so can't say, but have used the us_open in the States, and with Mint mobile it has definitely worked, as has vowifi.
good luck
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Thank you very much, I've not found such accurate and digestible information elsewhere!
But just to be sure.... I DON'T need to backup the userdata partition? And if I do.... Can I restore it from my old Broken G8 Thinq (which's android 10) to my new one (which's android 11) if I like the apps and stuff better (Both're AT&T). Would I have to unlock the carrier of the old one first (the new one is already unlocked)?
What if it were the same android version? What if it were different preinstalled carrier?
Also does that mean someone can get all my data with use of simple EDL?
PHANX0M said:
Thank you very much, I've not found such accurate and digestible information elsewhere!
But just to be sure.... I DON'T need to backup the userdata partition? And if I do.... Can I restore it from my old Broken G8 Thinq (which's android 10) to my new one (which's android 11) if I like the apps and stuff better (Both're AT&T). Would I have to unlock the carrier of the old one first (the new one is already unlocked)?
What if it were the same android version? What if it were different preinstalled carrier?
Also does that mean someone can get all my data with use of simple EDL?
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Sorry, I can't be of much help with something like this. I've never tried to back up user data because it's just too much data and I would just prefer to reinstall the apps. Yes, someone could put the device in edl mode and pull off the user data, but if it's a stock device, it will be encrypted.
AsItLies said:
Sorry, I can't be of much help with something like this. I've never tried to back up user data because it's just too much data and I would just prefer to reinstall the apps. Yes, someone could put the device in edl mode and pull off the user data, but if it's a stock device, it will be encrypted.
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Click to collapse
So you're saying if the ROM (whether stock or not) supports encryption, the data pulled will be useless? And could I restore other partitions backed up from ANOTHER of the same device (whether different android version or not)?
And it's only encrypted if there's a lock code/pattern?
And if the bootloader was unlocked someone could just flash a custom recovery and bypass the lockscreen right?
Also luckily Mint doesn't read the IMEI like greedy AT&T