Develop Bugs

LG G4 US99111a

Hi. I'm wondering if I can get some help with this device. I purchased this device unlocked from my local Rent a Center in New York. Since its unlocked, I am using with my servicer provider Metropcs. Here's where im having some issues. Metropcs offers WiFi Calling on all their devices [ have a LG K7 ] as does T-mobile since they own metro. I noticed that the feature is MIA on my G4. I did some research and found out from LG that the phone itself was originally a US Cellular device. I then called US Celluar. I spoke with their techs and was informed that they don't offer WiFi calling at all with their service, but it doesnt mean the phone doesnt support it. Believe it or not, the tech told me that its more or less a software thing. I went through the stage to upgrade the device to Marshmallow, but apparently its not available. I noticed that all US Cellular LG G4's have Marshmallow. Im wondering if theres a root method that might fix my issues. I looked around and didnt see one for this LG G4 US99111a. I only see them for US99110. Can anyone here at XDA possibly help? Any and all info will be appreciated. Thanks in advance.

mrrock79 said:
Hi. I'm wondering if I can get some help with this device. I purchased this device unlocked from my local Rent a Center in New York. Since its unlocked, I am using with my servicer provider Metropcs. Here's where im having some issues. Metropcs offers WiFi Calling on all their devices [ have a LG K7 ] as does T-mobile since they own metro. I noticed that the feature is MIA on my G4. I did some research and found out from LG that the phone itself was originally a US Cellular device. I then called US Celluar. I spoke with their techs and was informed that they don't offer WiFi calling at all with their service, but it doesnt mean the phone doesnt support it. Believe it or not, the tech told me that its more or less a software thing. I went through the stage to upgrade the device to Marshmallow, but apparently its not available. I noticed that all US Cellular LG G4's have Marshmallow. Im wondering if theres a root method that might fix my issues. I looked around and didnt see one for this LG G4 US99111a. I only see them for US99110. Can anyone here at XDA possibly help? Any and all info will be appreciated. Thanks in advance.
Click to expand...
Click to collapse
I have same phone no root yet I'm in NY also purchased phone from same place

MrRock...you should be able to root that phone without any problems. Do the send commands work in download mode? I need the modem files from your phone

Theres no root method for us99111a only us99110a and I bricked phone trying it so dont bother with that

joeeboogz said:
Theres no root method for us99111a only us99110a and I bricked phone trying it so dont bother with that
Click to expand...
Click to collapse
How did you brick the phone? If the phone has access to the DD commands then you can create the image yourself...obviously your going to brick the phone flashing another phones pre-rooted system img... All LG's on Android 5 can be rooted if you can access the proper commands. If your working with your own image how are you going to brick it???
I say this because I was even able to flash the LS991 TOT and root my phone and its a US991...only problem was it flashed the Modem files and the KDZ does not contain ModemST1 and ModemST2.

cant find a lg710PM firmware kdz for cross flashing with sprint, anyone link?

cant find a lg710PM firmware kdz for cross flashing with sprint, can anyone link?
I bought from amazon a refurbished USA unlocked (ULM) LG G7 thinq that I cant seem to register on the sprint network.
wanted to try the lg710PM firmware but cant find it anywhere, any links or advice? thanks!!!

zultdush said:
cant find a lg710PM firmware kdz for cross flashing with sprint, can anyone link?
I bought from amazon a refurbished USA unlocked (ULM) LG G7 thinq that I cant seem to register on the sprint network.
wanted to try the lg710PM firmware but cant find it anywhere, any links or advice? thanks!!!
Click to expand...
Click to collapse
None exist as of yet.. Not Supported: LG devices from ATT, Cricket, Sprint, BoostMobile, VirginMobile, AIO and Tracfone. TM Verizon are the only ones.. This came from https://lg-firmware-rom.com/.

doubledragon5 said:
None exist as of yet.. Not Supported: LG devices from ATT, Cricket, Sprint, BoostMobile, VirginMobile, AIO and Tracfone. TM Verizon are the only ones.. This came from44.
Click to expand...
Click to collapse
hey thanks for replying so quick, so if I was on sprint firmware, and wanted to try any of the others, does that mean I can only go one direction? like once I'm off sprint I cant go back, or are there ways I can get back to my original sprint firmware?

zultdush said:
hey thanks for replying so quick, so if I was on sprint firmware, and wanted to try any of the others, does that mean I can only go one direction? like once I'm off sprint I cant go back, or are there ways I can get back to my original sprint firmware?
Click to expand...
Click to collapse
You can with a unlocked bootloader. But to go back to Sprint you need the official firmeware which they do not provide to the public.... I have a G7 had it unlocked, different firmware installed. Had no service, . Tried to flash another firmware and ended up wiith a hard brick.. Got it back to the first unofficial sprint firmware, then had to have Sprint reflash the official firmware for the phone.. What's nice the bootloader is still unlocked.. Right now I would not even try anything. Best bet is to return if able, and buy a already unlocked version, so long as you can use it with sprint.

doubledragon5 said:
You can with a unlocked bootloader. But to go back to Sprint you need the official firmeware which they do not provide to the public.... I have a G7 had it unlocked, different firmware installed. Had no service, . Tried to flash another firmware and ended up wiith a hard brick.. Got it back to the first unofficial sprint firmware, then had to have Sprint reflash the official firmware for the phone.. What's nice the bootloader is still unlocked.. Right now I would not even try anything. Best bet is to return if able, and buy a already unlocked version, so long as you can use it with sprint.
Click to expand...
Click to collapse
I have a Sprint G7 (G710PM), can I flash any other carrier kdz to use the phone on T-Mobile?

caquito07 said:
I have a Sprint G7 (G710PM), can I flash any other carrier kdz to use the phone on T-Mobile?
Click to expand...
Click to collapse
Not with a locked bootloader

doubledragon5 said:
Not with a locked bootloader
Click to expand...
Click to collapse
Man I just bricked the phone, first I tried flashing G710EM using LGUP and Partition DL (Select All) it failed almost immediately, after rebooting the phone it booted straight to Firmware Upgrade mode. Then, I got G710N20f, also tried to flash it using Partition DL (Select all), this time it failed at more than 70% step BackupGPT, now when I reboot the phone, I get the LG logo but after the screen turns to whitenoise like, it seems like it is still in Firmware Upgrade as I can still connect to it using LGUP.
Any ideas how to unbrick it? :crying:

caquito07 said:
Man I just bricked the phone, first I tried flashing G710EM using LGUP and Partition DL (Select All) it failed almost immediately, after rebooting the phone it booted straight to Firmware Upgrade mode. Then, I got G710N20f, also tried to flash it using Partition DL (Select all), this time it failed at more than 70% step BackupGPT, now when I reboot the phone, I get the LG logo but after the screen turns to whitenoise like, it seems like it is still in Firmware Upgrade as I can still connect to it using LGUP.
Any ideas how to unbrick it? :crying:
Click to expand...
Click to collapse
If you have Sprit take it there they will havel flash the correct firmware..

doubledragon5 said:
If you have Sprit take it there they will havel flash the correct firmware..
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Click to collapse
I dont, I am T-Mobile user.
I have dump from a similar working phone, is it possible to restore from the dump?

caquito07 said:
I dont, I am T-Mobile user.
I have dump from a similar working phone, is it possible to restore from the dump?
Click to expand...
Click to collapse
Should be, that's how Sprint tooke care of mine

doubledragon5 said:
Should be, that's how Sprint tooke care of mine
Click to expand...
Click to collapse
Do you know how I can create a TOT or KDZ or which ever the case to recover the phone from the dump files?

doubledragon5 said:
Should be, that's how Sprint tooke care of mine
Click to expand...
Click to collapse
Hi, i just did a remote unlock via ebay to an unlocked firmware. I want to revert the changes back so that I could use a sprint mvno. Is it possible?

caquito07 said:
Do you know how I can create a TOT or KDZ or which ever the case to recover the phone from the dump files?
Click to expand...
Click to collapse
I have no clue on how to do that.. You will have to do a search in google or inthe forms.
---------- Post added at 02:18 AM ---------- Previous post was at 02:15 AM ----------
Truffle1991 said:
Hi, i just did a remote unlock via ebay to an unlocked firmware. I want to revert the changes back so that I could use a sprint mvno. Is it possible?
Click to expand...
Click to collapse
Are you sure it is firmware (bootloader unlcok)? or sim unlock, there is a difference.. If you did a bootloader unlock you will get a waring saying. "Warning your software can not be check or is corrupt, please relock the bootloader". If you don't have this kind of message of this sort, then you just had it sim unlocked.

doubledragon5 said:
I have no clue on how to do that.. You will have to do a search in google or inthe forms.
---------- Post added at 02:18 AM ---------- Previous post was at 02:15 AM ----------
Are you sure it is firmware (bootloader unlcok)? or sim unlock, there is a difference.. If you did a bootloader unlock you will get a waring saying. "Warning your software can not be check or is corrupt, please relock the bootloader". If you don't have this kind of message of this sort, then you just had it sim unlocked.
Click to expand...
Click to collapse
im just going by the ebay listing. It states"Your phone will be converted to a unlocked firmware version and that i can no longer receive ota updates".
My software version is G710ULM11e and my build number is OPR1.170623.032 and im on security patch level july 1, 2018 and android 8.0. When i go to the update center to check for a software update it states im using the latest version for my phone.
I did try a prl update and update device config and it states profile cant be updated. SprintDM notification shows that it trying update mobile network. it comes on and off every 3 mins or so.
I hope this is enough information to go off of! If you need me more information , please tell.
Also I did contact sprint via chat and they stated i could get my firmware back to stock but its 2 about 2 hours away from my city . itll be a like a whole day trip for me since i don't drive and would have to take a bus. I would love to avoid that.
Thanks!

Truffle1991 said:
im just going by the ebay listing. It states"Your phone will be converted to a unlocked firmware version and that i can no longer receive ota updates".
My software version is G710ULM11e and my build number is OPR1.170623.032 and im on security patch level july 1, 2018 and android 8.0. When i go to the update center to check for a software update it states im using the latest version for my phone.
I did try a prl update and update device config and it states profile cant be updated. SprintDM notification shows that it trying update mobile network. it comes on and off every 3 mins or so.
I hope this is enough information to go off of! If you need me more information , please tell.
Also I did contact sprint via chat and they stated i could get my firmware back to stock but its 2 about 2 hours away from my city . itll be a like a whole day trip for me since i don't drive and would have to take a bus. I would love to avoid that.
Thanks!
Click to expand...
Click to collapse
that problem with the Sprint DM trying to connect every couple minutes is a huge problem with the bootloaders be unlocked you will have to go to Sprint and have them do it it takes about 30 minutes because right now there is no firmware available for Sprint anywhere on the internet. when I get a break from my new job I am going to try and install TWRP on my device and if I do it successfully I will be able to upload some firmware but that's not guaranteed.

doubledragon5 said:
that problem with the Sprint DM trying to connect every couple minutes is a huge problem with the bootloaders be unlocked you will have to go to Sprint and have them do it it takes about 30 minutes because right now there is no firmware available for Sprint anywhere on the internet. when I get a break from my new job I am going to try and install TWRP on my device and if I do it successfully I will be able to upload some firmware but that's not guaranteed.
Click to expand...
Click to collapse
I went to sprint yesterday and the rep turned me down the moment I answered no whether I had insurance or not for the phone. I'll just port my number to a gsm carrier and use my G7 there.

Truffle1991 said:
I went to sprint yesterday and the rep turned me down the moment I answered no whether I had insurance or not for the phone. I'll just port my number to a gsm carrier and use my G7 there.
Click to expand...
Click to collapse
Whether you had insurance on the phone or not should not have mattered. Sprint should have flashed the firmware, cuz that's their damn job. They asked me the same question I told them no and they still flash the firmware.

Truffle1991 said:
I went to sprint yesterday and the rep turned me down the moment I answered no whether I had insurance or not for the phone. I'll just port my number to a gsm carrier and use my G7 there.
Click to expand...
Click to collapse
You have to be assertive or act completely aloof. If you are a paying Sprint customer, they will reset/reflash your phone. If no one in your immediate area can help you out, maybe you can mail the phone to someone who can get it serviced (heh I'd happily do it for free but hopefully there is someone a bit tech savvy in your own social network).

AT&T LG G8 - Want to flash stock firmware, possible?

AT&T LG G8 - Want to flash stock firmware, possible? Trying to use it on Google FI and it seems hotpot and many other features aren't working. Phione is paid in full and unlocked. Factory firmware currently.

I want to flash my phone

So you're trying to flash stock on top of stock?

The request is to see if you can flash a bare LG unlocked ROM that comes with factory unlocked phones onto a phone that came with a stock AT&T ROM. The Att phone has now been carrier unlocked, is used on a different network, so the Att specific apps that replaced stock apps no longer work.
I was also wondering if I could do this with my Tmobile G8; unlock the phone, then flash the unlocked LG OS instead of the Tmobile version. My goal is debloat, and to be able to have the original Android hotspot app. Not to mention get rid of that terrible pink, loud, annoying carrier startup splash.
Also, I wonder if security updates would come faster when strait from LG instead of the carrier.

DrivenKeys said:
The request is to see if you can flash a bare LG unlocked ROM that comes with factory unlocked phones onto a phone that came with a stock AT&T ROM. The Att phone has now been carrier unlocked, is used on a different network, so the Att specific apps that replaced stock apps no longer work.
I was also wondering if I could do this with my Tmobile G8; unlock the phone, then flash the unlocked LG OS instead of the Tmobile version. My goal is debloat, and to be able to have the original Android hotspot app. Not to mention get rid of that terrible pink, loud, annoying carrier startup splash.
Also, I wonder if security updates would come faster when strait from LG instead of the carrier.
Click to expand...
Click to collapse
Let me know if you find a debloated is for a T-Mobile g8

Has anyone figured out any method that actually works for just flashing firmware to the g8?

Unlike Samsung phones where you can flash other firmwares via ODIN I don't think this phone has that ability. If you got to the ROM/Development section there are threads where people posted firmwares but no instructions on how to flash.

SantinoInc said:
Unlike Samsung phones where you can flash other firmwares via ODIN I don't think this phone has that ability. If you got to the ROM/Development section there are threads where people posted firmwares but no instructions on how to flash.
Click to expand...
Click to collapse
We can actually cross flash, but we need a modified lg dll to fool lgup into letting us flash any firmware.

I have tried just about everything I can think of to get this thing to flash. I saw some people using lgup v1.15 via the command line but that didn't work either.

cas8180 said:
I have tried just about everything I can think of to get this thing to flash. I saw some people using lgup v1.15 via the command line but that didn't work either.
Click to expand...
Click to collapse
I am trying to do the same. I have a sprint version of the g8 thinq which i would like to install the unlocked version of the firmware. Any way to do so?

I have 2 unlocked sprint lg g8. One of them doesn't have the Sprint splash screens. So somebody was able to do something.

DrivenKeys said:
The request is to see if you can flash a bare LG unlocked ROM that comes with factory unlocked phones onto a phone that came with a stock AT&T ROM. The Att phone has now been carrier unlocked, is used on a different network, so the Att specific apps that replaced stock apps no longer work.
I was also wondering if I could do this with my Tmobile G8; unlock the phone, then flash the unlocked LG OS instead of the Tmobile version. My goal is debloat, and to be able to have the original Android hotspot app. Not to mention get rid of that terrible pink, loud, annoying carrier startup splash.
Also, I wonder if security updates would come faster when strait from LG instead of the carrier.
Click to expand...
Click to collapse
Hello,
I've tried to flash another firmware on an AT&T LM-G820UM10i with LGUP and a firmware found on lg-firmware.
The LGUP restarted the phone in Firmware update mode, then on LGUP, I got an error
Error 0x5319, Not allow to change the device.(ATT_US->OPEN_CA)
So I've unplugged and reboot the phone. Still working.

asaural said:
Hello,
I've tried to flash another firmware on an AT&T LM-G820UM10i with LGUP and a firmware found on lg-firmware.
The LGUP restarted the phone in Firmware update mode, then on LGUP, I got an error
Error 0x5319, Not allow to change the device.(ATT_US->OPEN_CA)
So I've unplugged and reboot the phone. Still working.
Click to expand...
Click to collapse
Lg Blocked crossflashing , its not possible as of this moment.

siulmagic said:
We can actually cross flash, but we need a modified lg dll to fool lgup into letting us flash any firmware.
Click to expand...
Click to collapse
go ahead and make the very first ever how to tutorial and get all the glory

rldev said:
I have 2 unlocked sprint lg g8. One of them doesn't have the Sprint splash screens. So somebody was able to do something.
Click to expand...
Click to collapse
that just means one of the unit was not activated on Sprint (usually once activated Chameleon then kicks in and adds all the sprint stuff or boost depending on the MVNO)

I have all the necessary data and the LG DLL in the LGUP folder to put any ROM released, I have an LG G8 from AT&T, I am not within the United States but I am afraid that by modifying the ROM (KDZ) they will not work for me some things like 4G or some functions inside the phone, to specify live in Latin America, if someone helps me pass the LGUP data through Google Drive

MrFulgore said:
I have all the necessary data and the LG DLL in the LGUP folder to put any ROM released, I have an LG G8 from AT&T, I am not within the United States but I am afraid that by modifying the ROM (KDZ) they will not work for me some things like 4G or some functions inside the phone, to specify live in Latin America, if someone helps me pass the LGUP data through Google Drive
Click to expand...
Click to collapse
You can't cross flash

WHY? The hardware comes with ****ty bloated software, which I did not pay for and want off the ****ing device

q-killer said:
WHY? The hardware comes with ****ty bloated software, which I did not pay for and want off the ****ing device
Click to expand...
Click to collapse
Because the G8 and all newer LG phones have security measures to prevent cross flashing.
Many bloatware apps can be Disabled in App Info Settings. The rest can be removed with ADB shell "pm uninstall". Google it.
It's best to never ever buy carrier devices. There's a reason they're the ones sold with a discount :cyclops:

TheDannemand said:
Because the G8 and all newer LG phones have security measures to prevent cross flashing.
Many bloatware apps can be Disabled in App Info Settings. The rest can be removed with ADB shell "pm uninstall". Google it.
It's best to never ever buy carrier devices. There's a reason they're the ones sold with a discount :cyclops:
Click to expand...
Click to collapse
The Sprint LG g8 is recognized by lgup when it's on leaked beta. It's possible they haven't built in security measures yet, I'm going to try cross flashing

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

How To Guide LE2127 TMobile To EU One Click

Some quick tips what I did to my new OP9 Pro Tmob LE2127 on CE22 firmware here in Canada! Picked the phone up a few days ago and loved it right away but hated all the Tmob crap they installed. Tried converting with the Fastboot method and managed to brick the phone as I'm running Linux and its a little more tricky if your not a Linux pro! It unbricked very easily with the MSM back to Tmob tool and an old laptop on Windoz 10. Make sure setup the HUSB Qualcomm drivers properly! Than some reading and realized you can only go from TMob to EU rom with the MSM tool. Tried that worked perfectly the first time did all the subsequent OTA updates all the way to the current Oxygen OS 13 & Android 13 and its working perfectly. At first there were some weird SIM modem dropping and data issues but as I upgraded to newer versions of Oxygen it cleared it self up. Still says two sims in the mobile network area but identifies them correctly also the phone identifies as a LE2123 now! I also didnt unlock my bootloader but I did get an unlock.bin just incase that process took only overnight, I submitted and recieved the Unlock Bin the next morning it shows up in your One Plus account and you download it! Hope that helps some one out and issues I will report back! Phone is very smooth now!

GreatNorth said:
Some quick tips what I did to my new OP9 Pro Tmob LE2127 on CE22 firmware here in Canada! Picked the phone up a few days ago and loved it right away but hated all the Tmob crap they installed. Tried converting with the Fastboot method and managed to brick the phone as I'm running Linux and its a little more tricky if your not a Linux pro! It unbricked very easily with the MSM back to Tmob tool and an old laptop on Windoz 10. Make sure setup the HUSB Qualcomm drivers properly! Than some reading and realized you can only go from TMob to EU rom with the MSM tool. Tried that worked perfectly the first time did all the subsequent OTA updates all the way to the current Oxygen OS 13 & Android 13 and its working perfectly. At first there were some weird SIM modem dropping and data issues but as I upgraded to newer versions of Oxygen it cleared it self up. Still says two sims in the mobile network area but identifies them correctly also the phone identifies as a LE2123 now! I also didnt unlock my bootloader but I did get an unlock.bin just incase that process took only overnight, I submitted and recieved the Unlock Bin the next morning it shows up in your One Plus account and you download it! Hope that helps some one out and issues I will report back! Phone is very smooth now!
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Are you gonna try any custom rom? If so, can you tell me your experiences whenever you decide to install custom roms?

ByPythoN said:
Are you gonna try any custom rom? If so, can you tell me your experiences whenever you decide to install custom roms?
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I'm on the fence about that right now the phone is running really smooth and fast I will give it a few days see how it goes!

I received (another and hopefully final) my op9pro the other day. Powered it up and noticed the OEM unlock was in blue and it still is after updating to the latest version. T-Mobile is giving me a hard time on getting my SIM unlocked. Probably because I bought it from Amazon. Want to attempt but I have seemed to have forgotten if root is still achievable with Sim being locked. Sorry been away for a year, you know iphone things.(throws up in mouth). Good phones though for battery life
If anyone has a locked sim,converted and rooted,please do tell if it is possible I don't need the steps,just confirmation that it works. Thanks

avid_droid said:
I received (another and hopefully final) my op9pro the other day. Powered it up and noticed the OEM unlock was in blue and it still is after updating to the latest version. T-Mobile is giving me a hard time on getting my SIM unlocked. Probably because I bought it from Amazon. Want to attempt but I have seemed to have forgotten if root is still achievable with Sim being locked. Sorry been away for a year, you know iphone things.(throws up in mouth). Good phones though for battery life
If anyone has a locked sim,converted and rooted,please do tell if it is possible I don't need the steps,just confirmation that it works. Thanks
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It's 100% sure, possible. I immediately converted my 9pro to Eu on day 1, while sim locked. I bypassed the toggle with a tool in the forum but there's also an adb command available for making the oem unlock toggle work.
This includes root and unlocked bootloader while sim locked.
The thing to be aware of is, the T-Mobile variants have a different bootloader unlock process vs non carrier variants. You submit an unlock token to OnePlus and get an unlock bin back, then flash that bin. Lately, people have been reporting the site is broken and they're using support email/chat to submit and get the token. However, this different process can also be bypassed:
Right after you do the Tmo->Eu msm conversion, it's advised to unlock the bootloader on Android 11. Android 11 on Eu will not need the unlock.bin to unlock the bootloader. But it is needed for later versions so if you want bootloader unlocked, do it right after conversion while still on A11.
The "problem" is, once you do this, if you want to sim unlock the phone later, you have to go back to stock Tmo firmware with the stock Tmo MSM tool, as the built in unlocker is not in Eu or other variants. Which means you will have to wipe data later whenever you want to get it unlocked.
it took me 6 Agents at Tmo chat support to finally get the unlock handled properly. One agent asked me to submit my proof of purchase and I did but they couldn't figure out how to unlock it because of the imei starting with 99 and they only know how to unlock imei starting with 35. Thankfully someone else did know how and they got it sorted after a week or so. Some agents told me it needs to be on the network for 40 days, some said they can't do it because I didn't buy it from T-Mobile, some said I need to wait longer. None were true. I told them I'm a developer and needed to unlock my bootloader to test things for my job.
Here's a link to the tool I used for making the oem unlock toggle work despite sim lock: https://forum.xda-developers.com/t/...ader-unlock-enabler-engineer-decrypt.4380419/

Hi, maybe stupid question but it's possible to due this remotely ( with team wiever or something similar)

koxo9471 said:
Hi, maybe stupid question but it's possible to due this remotely ( with team wiever or something similar)
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I'm sure its possible. If someone wants to get you up and running. But honestly, it's better to learn it yourself in case something happens and you end up without a phone cause you didn't want to learn. It seems rough but once you get it you're golden bro. Tough it out and smash them wires in the phone/computer, and open a terminal and tap away at the keyboard. If all else fails, slap the phone and)or computer around and show em who's boss

I personally had to go to AA as BA/EU was giving me a nightmare of a time with data

Just an update on my 2127 Tmob to 2123 EU conversion! Its working flawless guys I didnt bother unlocking the bootloader when I did the conversion even though I do have the unlock bin. It only took overnight to get the unlock bin this was a few weeks ago! The phone now is working really good everything is flawless still on a locked boot loader which is fine its working smooth and taking updates another OTA update came today! Running A13 Oos 13 LE2123_11_F74.

Which version of MSM tool is best for this conversion?

GreatNorth said:
Just an update on my 2127 Tmob to 2123 EU conversion! Its working flawless guys I didnt bother unlocking the bootloader when I did the conversion even though I do have the unlock bin. It only took overnight to get the unlock bin this was a few weeks ago! The phone now is working really good everything is flawless still on a locked boot loader which is fine its working smooth and taking updates another OTA update came today! Running A13 Oos 13 LE2123_11_F74.
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Do you still have mobile data? Many of us in this thread have lost our 4G and 5G data after updating to F.74:
[TMO] 9 PRO MODEM RETENTION/DATA FIX
----- With the release of OOS13, the modem issue no longer exist. Thank you all for the support & help with this unfortunate issue, we had to endure.... ----- EXPLICITLY FOR TMOBILE 9 PRO (I'm not responsible for your failure to read or...
forum.xda-developers.com

Mogster2K said:
Do you still have mobile data? Many of us in this thread have lost our 4G and 5G data after updating to F.74:
[TMO] 9 PRO MODEM RETENTION/DATA FIX
----- With the release of OOS13, the modem issue no longer exist. Thank you all for the support & help with this unfortunate issue, we had to endure.... ----- EXPLICITLY FOR TMOBILE 9 PRO (I'm not responsible for your failure to read or...
forum.xda-developers.com
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Yes everything is working good!

Question:
1.Enabling dual sim will add another IMEI to the device, so the original IMEI is duplicated or you get a new IMEI for it? In my country duplicate IMEI's aren't allowed hence asking
2. I remember there was a dual sim patch for OP8T and there were rumors of losing dual sim capability after update is that the same here?