---Help Needed--- AT&T LG G4 Bootloader unlocking with AntiRollback v3 - G4 Q&A, Help & Troubleshooting

Hey everyone! About a year ago I bought an AT&T LG G4 of of ebay with the intent of using it as a daily-driver phone. The seller listed it as Unlocked, and only mentioned the model number at the bottom of the page. I didn't look at that first, so I ended up with an AT&T G4.
It's unlocked, so I can use any sim with it, but the amount of AT&T bloatware on it is INSANE. So I used it as a primary phone for a few months, but than ended up shelving it, and using it a secondary, playarround phone.
And now as I'm not using it, I'm looking for a methood to unlock the bootloader and get rid of the AT&T bloatware. So today I looked arround and found out that the AT&T G4 was indeed unlockable but, you need to have AntiRollback V2 or lower. But my phone has AntiRollback V3. Is there any methood you can unlock an AT&T G4 with AntiRollback V3?
If I lose the simcard funcionality it doesn't matter. I just want to get rid of the bloatware, and update to a never version of android.
Any help would be appriciated.
minigyima

Related

[Q] Unlocked At&t

So I'm looking to purchase an LG G3, however I wanted a unlocked model without carrier bloatware. I'd like to be able to use it with AT&T LTE. IWhat's my best option?
Michael1211 said:
So I'm looking to purchase an LG G3, however I wanted a unlocked model without carrier bloatware. I'd like to be able to use it with AT&T LTE. IWhat's my best option?
Click to expand...
Click to collapse
1) you buy the at&t one, root and delete the bloatware
2) you buy the international one
Unlocked is about the state of the bootloader and I thing you ment something else, if you need a unlocked bootloader try the T-mobile version.

Korean LG G4

Is this phone more or less an international device? It shows as LG-F500K in the about menu. Would like to unlock and root.
AFAIK international version is H815
any F500 is korean version
not sure about the unlock, but for root, you can't use the current H815 method
Thanks. I realize I should have posted here initially. Guess I'll need to check procedures to determine if the device is unlocked already. I was told by the salesperson at olleh that the device was unlocked for both sim and bootloader.

Unlocked VS US Cellular

My G4 was sold to me as "unlocked". There was no mention of US Cellular and the battery door nor boot screen shows any US Cellular logo. Model number is LGUS991 and software version is us99111a. To my understanding this is not the US Cellular model, but rather an unlocked model different from the US Cellular one. Upon emailing LG about why I can't receive an ota update for MM they told me its because I am not using US Cellular service which got me thinking that maybe this is the US Cellular phone. A Google search just yieleded me a result about root that said "LG G4 carrier models can now be unlocked like the unlocked model"......I could've sworn with all my reading that the damned unlocked model was the one that had trouble being rooted yet searching google it appears to be the other way around as if the unlocked model already had easy root for a while and yet looking around the sub forums here at XDA I see no root method for my model or any roms.
Again I'm pretty sure this is the straight unlocked model I have and NOT the US Cellular one........so WHAT can I do with it? And why would the ota for MM not be appearing? (i don't want it anyway with all the issue people have had but am just wondering). Sorry to make these posts but the info is all over the place. Can't seem to find the correct answers.
Sent from my LGUS991 using XDA-Developers mobile app
carnivalrejectq said:
My G4 was sold to me as "unlocked". There was no mention of US Cellular and the battery door nor boot screen shows any US Cellular logo. Model number is LGUS991 and software version is us99111a. To my understanding this is not the US Cellular model, but rather an unlocked model different from the US Cellular one. Upon emailing LG about why I can't receive an ota update for MM they told me its because I am not using US Cellular service which got me thinking that maybe this is the US Cellular phone. A Google search just yieleded me a result about root that said "LG G4 carrier models can now be unlocked like the unlocked model"......I could've sworn with all my reading that the damned unlocked model was the one that had trouble being rooted yet searching google it appears to be the other way around as if the unlocked model already had easy root for a while and yet looking around the sub forums here at XDA I see no root method for my model or any roms.
Again I'm pretty sure this is the straight unlocked model I have and NOT the US Cellular one........so WHAT can I do with it? And why would the ota for MM not be appearing? (i don't want it anyway with all the issue people have had but am just wondering). Sorry to make these posts but the info is all over the place. Can't seem to find the correct answers.
Sent from my LGUS991 using XDA-Developers mobile app
Click to expand...
Click to collapse
(
Model number is LGUS991 and software version is us99111a.)
isnt that us cellular? as unlocked it means carrier unlock not bootloader unlock..
and yes theres is a way to use root . i have unlockable phone TMOBILE but i dont want to void my warranty due to thte bootlooping issue... and i have root and xposed installed. to roo its called low sffort root . search.
raptorddd said:
(
Model number is LGUS991 and software version is us99111a.)
isnt that us cellular? as unlocked it means carrier unlock not bootloader unlock..
and yes theres is a way to use root . i have unlockable phone TMOBILE but i dont want to void my warranty due to thte bootlooping issue... and i have root and xposed installed. to roo its called low sffort root . search.
Click to expand...
Click to collapse
I dont know that that is US Cellular. The answer seems unclear. Like i said my battery door contains no logo nor do i have any bloat from them or a boot screen from them. Also, i understand the difference between an unlocked phone and an unlocked bootkoader lol.
Sent from my LGUS991 using XDA-Developers mobile app
carnivalrejectq said:
I dont know that that is US Cellular. The answer seems unclear. Like i said my battery door contains no logo nor do i have any bloat from them or a boot screen from them. Also, i understand the difference between an unlocked phone and an unlocked bootkoader lol.
Sent from my LGUS991 using XDA-Developers mobile app
Click to expand...
Click to collapse
did you look at amazon. as i read that too ... and i tought it would be a european model.. but i read reviews then i saw it wasnt bootloader unlocked.. so i avoid it.
raptorddd said:
did you look at amazon. as i read that too ... and i tought it would be a european model.. but i read reviews then i saw it wasnt bootloader unlocked.. so i avoid it.
Click to expand...
Click to collapse
No I didn't. I should have avoided this phone I guess. Camera is great and it's fast but idk battery life leaves a lot to be desired and I feel out of place being stuck on marshmallow and unable to root. I got the bastard child forgotten G4 I guess.
Sent from my LGUS991 using XDA-Developers mobile app
carnivalrejectq said:
No I didn't. I should have avoided this phone I guess. Camera is great and it's fast but idk battery life leaves a lot to be desired and I feel out of place being stuck on marshmallow and unable to root. I got the bastard child forgotten G4 I guess.
Sent from my LGUS991 using XDA-Developers mobile app
Click to expand...
Click to collapse
can you go back to LP then root with locked bootloader and use xposed...
How to root lg g4 us991
carnivalrejectq said:
My G4 was sold to me as "unlocked". There was no mention of US Cellular and the battery door nor boot screen shows any US Cellular logo. Model number is LGUS991 and software version is us99111a. To my understanding this is not the US Cellular model, but rather an unlocked model different from the US Cellular one. Upon emailing LG about why I can't receive an ota update for MM they told me its because I am not using US Cellular service which got me thinking that maybe this is the US Cellular phone. A Google search just yieleded me a result about root that said "LG G4 carrier models can now be unlocked like the unlocked model"......I could've sworn with all my reading that the damned unlocked model was the one that had trouble being rooted yet searching google it appears to be the other way around as if the unlocked model already had easy root for a while and yet looking around the sub forums here at XDA I see no root method for my model or any roms.
Again I'm pretty sure this is the straight unlocked model I have and NOT the US Cellular one........so WHAT can I do with it? And why would the ota for MM not be appearing? (i don't want it anyway with all the issue people have had but am just wondering). Sorry to make these posts but the info is all over the place. Can't seem to find the correct answers.
Sent from my LGUS991 using XDA-Developers mobile app
Click to expand...
Click to collapse
Hello carnivalrejectq, were you able to root your phone even I have this same problem with my LG G4 US99121a.
How can I root my phone ?
Negative, you have a Rent a Center G4.
10A = Unbranded G4
10C = US Cellular
11A = Rent A Center
LG is full of **** when they say the updates only come with a SIM card for this phone. The only way to get an update is via WiFi if there is even an update to be had. My unbranded US991LD updated to 21A without a SIM card connected to WiFi even while the morons at LG were telling me otherwise. You can't get an update from USC if it's not even a USC phone!
Noksucow1 said:
Negative, you have a Rent a Center G4.
10A = Unbranded G4
10C = US Cellular
11A = Rent A Center
LG is full of **** when they say the updates only come with a SIM card for this phone. The only way to get an update is via WiFi if there is even an update to be had. My unbranded US991LD updated to 21A without a SIM card connected to WiFi even while the morons at LG were telling me otherwise. You can't get an update from USC if it's not even a USC phone!
Click to expand...
Click to collapse
I have 21a. Can I root it ?
Naman Katyal said:
I have 21a. Can I root it ?
Click to expand...
Click to collapse
MM can't be rooted without an unlocked bootloader, so no. There are some possibilities, but I got stuck with the modem not working. I am able to downgrade our phone to 5.1 and root. The process to downgrade and root basically converts our phone to an LS991...but it breaks the modem. There is no TOT file with all required files to completely restore our phone...I'm not willing to send my phone back to LG again.

LG G4 complicated issue

Hey, so I bought myself a used LG G4. The guy selling it, claimed that it is the international version, I too check it through out, underneath the battery and in the software, it said that it is the international version H815, however today I was trying to unlock the bootloader (which i couldn't) and discovered through the ADB that the LG G4 I have is not the international one, but the sprint one, LS991. I so very confused, above that when I used some random app to check my bootloader status, it is always 'unknown'!
WTF is the problem here! I am so confused :crying:
Anyone? Please help me!!!

New LM-G820UM (AT&T) purchased from ebay. Using on T-Mobile and have update question

New LM-G820UM (AT&T) purchased from ebay. Using on T-Mobile and have update question
Hi all,
Grabbed a G8 Thinq for my son off ebay (which scared me but it was cheap). It's an AT&T variant but it's working just fine with T-Mobile. However, the security updates are from July and I'd like to update. I tried LG Bridge and get a "cannot check software version" error. Before I send this thing back I wanted to check here. I understand that OTA updates are super slow to arrived when you unlock and switch carriers but will I ever get one? Is there another way to update this thing?
I'm pretty Android savvy but just haven't messed around on here since my Nexus 6P days. Thanks!
sahively said:
Hi all,
Grabbed a G8 Thinq for my son off ebay (which scared me but it was cheap). It's an AT&T variant but it's working just fine with T-Mobile. However, the security updates are from July and I'd like to update. I tried LG Bridge and get a "cannot check software version" error. Before I send this thing back I wanted to check here. I understand that OTA updates are super slow to arrived when you unlock and switch carriers but will I ever get one? Is there another way to update this thing?
I'm pretty Android savvy but just haven't messed around on here since my Nexus 6P days. Thanks!
Click to expand...
Click to collapse
There should be newer firmware kdzs that you can download and manually flash using lgup for Att variant just look it up.
antintin said:
There should be newer firmware kdzs that you can download and manually flash using lgup for Att variant just look it up.
Click to expand...
Click to collapse
Thanks, I'll do some reading on that. Appreciate the look.
Are AT&T KDZs even available? I can't find them anywhere that doesn't look like a complete scam site.
sahively said:
Are AT&T KDZs even available? I can't find them anywhere that doesn't look like a complete scam site.
Click to expand...
Click to collapse
AT&T is known not to release KDZs ever, and to only provide updates to postpaid AT&T customers. I assume that's true with G8 as well. I saw those unlocked AT&T G8 on eBay for $320, but I wouldn't expect any updates, nor would I expect warranty to be honored.
TheDannemand said:
AT&T is known not to release KDZs ever, and to only provide updates to postpaid AT&T customers. I assume that's true with G8 as well. I saw those unlocked AT&T G8 on eBay for $320, but I wouldn't expect any updates, nor would I expect warranty to be honored.
Click to expand...
Click to collapse
Welp, this baby's going back. Just ordered up a T-Mobile version for only $20 more so "hopefully" it will actually update. Thanks for the guidance.
sahively said:
Hi all,
Grabbed a G8 Thinq for my son off ebay (which scared me but it was cheap). It's an AT&T variant but it's working just fine with T-Mobile. However, the security updates are from July and I'd like to update. I tried LG Bridge and get a "cannot check software version" error. Before I send this thing back I wanted to check here. I understand that OTA updates are super slow to arrived when you unlock and switch carriers but will I ever get one? Is there another way to update this thing?
I'm pretty Android savvy but just haven't messed around on here since my Nexus 6P days. Thanks!
Click to expand...
Click to collapse
Sprint unlocked variant updates just fine on any carrier
sahively said:
Welp, this baby's going back. Just ordered up a T-Mobile version for only $20 more so "hopefully" it will actually update. Thanks for the guidance.
Click to expand...
Click to collapse
T-Mobile is pretty good with updates. I have T-Mobile V30 on Red Pocket GSMA (AT&T MVNO) and receive updates.
But T-Mobile phones are very hard to carrier unlock. They can only be unlocked with a T-Mobile Device Unlock app, which queries T-Mobile servers for approval. If the phone is relocked (such as after LG repair, or if you get a warranty replacement) you won't be able to unlock it again unless you're a T-Mobile customer and/or have had the phone on their service for some time (40 days postpaid, 1 year prepaid). It can't be unlocked with a code like other phones.
Like AT&T, Sprint also doesn't release KDZs, but as noted they are less restrictive about OTA updates. T-Mobile and Verizon release KDZs.
Carrier phones generally suck for the same reason that carriers generally suck: Everything they do is always designed to suck you
TheDannemand said:
T-Mobile is pretty good with updates. I have T-Mobile V30 on Red Pocket GSMA (AT&T MVNO) and receive updates.
But T-Mobile phones are very hard to carrier unlock. They can only be unlocked with a T-Mobile Device Unlock app, which queries T-Mobile servers for approval. If the phone is relocked (such as after LG repair, or if you get a warranty replacement) you won't be able to unlock it again unless you're a T-Mobile customer and/or have had the phone on their service for some time (40 days postpaid, 1 year prepaid). It can't be unlocked with a code like other phones.
Like AT&T, Sprint also doesn't release KDZs, but as noted they are less restrictive about OTA updates. T-Mobile and Verizon release KDZs.
Carrier phones generally suck for the same reason that carriers generally suck: Everything they do is always designed to suck you
Click to expand...
Click to collapse
Yeah we just wait for bootloader unlock now
sahively said:
Hi all,
Grabbed a G8 Thinq for my son off ebay (which scared me but it was cheap). It's an AT&T variant but it's working just fine with T-Mobile. However, the security updates are from July and I'd like to update. I tried LG Bridge and get a "cannot check software version" error. Before I send this thing back I wanted to check here. I understand that OTA updates are super slow to arrived when you unlock and switch carriers but will I ever get one? Is there another way to update this thing?
I'm pretty Android savvy but just haven't messed around on here since my Nexus 6P days. Thanks!
Click to expand...
Click to collapse
Have a look on this thread:
https://forum.xda-developers.com/lg...e-released-t3958979/post81261151#post81261151
I faced the precise same situation, I was able to get the updates by moving my # to ATT prepaid.
antintin said:
Yeah we just wait for bootloader unlock now
Click to expand...
Click to collapse
The T-Mobile V30 has official bootloader unlock, as the only North American carrier model. I believe the same was true with V20: Just Enable OEM Unlock in Developer Settings, boot into fastboot mode (Vol- while inserting cable with phone off) and enter fastboot oem unlock. The problem is the bootloader is neutered, with fastboot flash and fastboot boot commands stripped out. So even after BL unlock fastboot cannot be be used to flash or boot TWRP. But it still relaxes the secure boot chain. So once @runningnak3d found a way to flash TWRP using Download Mode (laf) we were golden.
Of course that laf vulnerability is long since fixed. And I am sure somebody must have already checked if the T-Mobile G8 has official bootloader unlock like earlier LG phones. Right? Or are we just assuming it doesn't because other carrier models don't? I only began following the G8 threads recently, so I wouldn't know.
TheDannemand said:
The T-Mobile V30 has official bootloader unlock, as the only North American carrier model. I believe the same was true with V20: Just Enable OEM Unlock in Developer Settings, boot into fastboot mode (Vol- while inserting cable with phone off) and enter fastboot oem unlock. The problem is the bootloader is neutered, with fastboot flash and fastboot boot commands stripped out. So even after BL unlock fastboot cannot be be used to flash or boot TWRP. But it still relaxes the secure boot chain. So once @runningnak3d found a way to flash TWRP using Download Mode (laf) we were golden.
Of course that laf vulnerability is long since fixed. And I am sure somebody must have already checked if the T-Mobile G8 has official bootloader unlock like earlier LG phones. Right? Or are we just assuming it doesn't because other carrier models don't? I only began following the G8 threads recently, so I wouldn't know.
Click to expand...
Click to collapse
No g8 has it

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