LG G4 H815 Sim Unlock - G4 Q&A, Help & Troubleshooting

Hello Friends,
Recently i bought LG G4 H815 Network Unlocked Cell
if i Upgrade or downgrade OS than will it ask again Network Code(Sim Unlock Code ) because i don't have code
Please give reply if anyone know

sunnymodh said:
Hello Friends,
Recently i bought LG G4 H815 Network Unlocked Cell
if i Upgrade or downgrade OS than will it ask again Network Code(Sim Unlock Code ) because i don't have code
Please give reply if anyone know
Click to expand...
Click to collapse
Ensure you backup EFS ! This stores many important data like the unlock setting. Normally you will not need to unlock again but just for the case I highly recommend to backup EFS. Go in my TWRP thread and read the FAQ to find out how you can backup the efs manually. You can do so with TWRP as well but use my latest beta to do so then.
.
Sent from my LG-H815 using XDA Labs

steadfasterX said:
Ensure you backup EFS ! This stores many important data like the unlock setting. Normally you will not need to unlock again but just for the case I highly recommend to backup EFS. Go in my TWRP thread and read the FAQ to find out how you can backup the efs manually. You can do so with TWRP as well but use my latest beta to do so then.
.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Is it Possible to Get Code from EFS Backup ?

sunnymodh said:
Is it Possible to Get Code from EFS Backup ?
Click to expand...
Click to collapse
Not afaik. But if you have a backup it is not needed.
Sent from my LG-H815 using XDA Labs

steadfasterX said:
Not afaik. But if you have a backup it is not needed.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Thanks for Reverts
I got a cell 7 days back but whenever i tried India 4G Rellinace Jio Sim, internet is not working , even i tried to access 277634#*# or 277634#*#, but giving error than is possible to a fake Cell ?
Even i cheeked CPU-Z, IMEI all are perfect and get result as specification but i don't know what is the problem
Please if you know than tell me..

Related

H815 Imei 0

Hi guys,
I have LG G4 H815 Showing imei 0. i wanted to unlock the bootloader i sent the IMEI That was in the case and LG send me the Unlock.bin file but the bootloader unlock failed. so is there a way to set the IMEI to its original value???
leptdre said:
Hi guys,
I have LG G4 H815 Showing imei 0. i wanted to unlock the bootloader i sent the IMEI That was in the case and LG send me the Unlock.bin file but the bootloader unlock failed. so is there a way to set the IMEI to its original value???
Click to expand...
Click to collapse
Well If you would have a backup of efs yes... Which you can't have until you have twrp or similar installed.. So idk no way to recover it without a backup. Is the phone still booting? What is working what not? Do you really mean the imei or "imei sv"?
You wrote you send LG the imei? You have not go through the official unlock page by LG? The imei was taken from the sticker behind the battery? Or from within a booted rom?
.
Sent from my LG-H815 using XDA Labs
My IMEI was taken from the sticker behind the battery , it was the original one
----------------------------
Is the phone still booting?
What is working what not?
Do you really mean the imei or "imei sv"?
--> send a link to a screenshot or attach one here
You wrote you send LG the imei? You have not go through the official unlock page by LG?
The imei was taken from the sticker behind the battery? Or from within a booted rom?
------------------------------------
leptdre said:
My IMEI was taken from the sticker behind the battery , it was the original one
Click to expand...
Click to collapse
Really? I asked 5 questions and you answered 1?
This is not the way it works.. (at least for me)
Read the above again please and try again.
.
Sent from my LG-H815 using XDA Labs
leptdre said:
My IMEI was taken from the sticker behind the battery , it was the original one
Click to expand...
Click to collapse
easy contact LG and tell them what happened. since you had a working imei and after unlock it was deleted, wiped
raptorddd said:
easy contact LG and tell them what happened. since you had a working imei and after unlock it was deleted, wiped
Click to expand...
Click to collapse
I'm having same thing, although it happens when I try to install a custom rom. Imei gets wiped. Even though i have a backup of the original efs in twrp, restoring it makes no difference.
Sometimes when i try to restore the original non rooted system including backed up efs i still have a problem with no mobile signal and blank imei. Restoring efs from a different backup fixes it for some reason. Apart from using non rooted non custom Rom i basically can't get mobile signal.
Any ideas?

Lg-m150 ( phoenix 3 )

Hi, I'm Kalius I am making this thread for anything pertaining to upgrading, unlocking, backups, root process, bootloader, custom roms, custom recovery, or general info on the lg-m150
I am telling u abt starting the process of UNLOCKING
Different phones have different
Unlock Code Input Instructions, Try
the following Instructions in Order:
Method #1 Insert a non accepted
simcard, and enter code when
prompted for a code.
OR
Method #2 Go to the dial screen and
press: 2945#*150#
Choose network unlock and enter
unlock code
If Phone says, "Code Accepted" or
"Network Unlock Successful" or "Not
Yet Personalized" your phone is fully
Unlocked.
Chk it end tell me wht happend by these 2 methods also mention ur operater.thn maybe i'll hlp u in what to do nxt.
Don't forget to Press thanks if it helps.it encourages
Sent from my LG Optimus L3 II using XDA Labs
What would the unlock code that is asked for
It is for unlocking ur phn to use any network operator i.e any sim card.some devices like M-150 mostly comes with network boundations.so we need to unlock it to use any desirable sim card
Sent from my LG Optimus L3 II using XDA Labs
I did a factory reset on my lg m150 and now i dont know the google account to get in it...
So make a new Google a/c or recover it using another device and proceed
Sent from my LG Optimus L3 II using XDA Labs
Network Mode issue
In my lg-m150 i cant swich 3g or 4g network its only show 2g network and i cant found anny Network mode to swich in this device .hepl me
a.go to ur dialer
b.open testing menu by dialing 277634#*#
if not work then use this
*#*#4636#*#*
atleast 1 of these definitely work
c.select phone information
d.select gsm,wcdma,lte respectively for 2/3/4G,or try combination.
e.done
remember if u select option with single network others will not work until u change them again.
don't forget to press THANKS.
p.s plz note that these codes will work almost on all lg android not only m-150
Sent from my LG Optimus L3 II
using XDA Labs
So, Kingroot didn't do anything...
George_Jetson said:
So, Kingroot didn't do anything...
Click to expand...
Click to collapse
Ask properly if u want an answer.in which way u want to work with kingroot.be clear for what to ask
Hello ,I tried using the second testing menu for my lg m150 but it gives me a pop up that the application does not work on my device.
Veanneac said:
Hello ,I tried using the second testing menu for my lg m150 but it gives me a pop up that the application does not work on my device.
Click to expand...
Click to collapse
So try the 1st dude
Any news on rooting this phone?
Zai23 said:
Any news on rooting this phone?
Click to expand...
Click to collapse
Have u tried kingroot app.if not install it first and thn try to root with it in fair internet.if not work post again
Don't frget to press thanks if it helps :good:
Hello. Thanks for the thread. I tried using the code but the prompt message is 'phone is personalized'. Please what do I do, kindly help me out.
Andro Novice said:
Have u tried kingroot app.if not install it first and thn try to root with it in fair internet.if not work post again
Don't frget to press thanks if it helps :good:
Click to expand...
Click to collapse
I tried that and it didn't work.
Robgreen123 said:
Hello. Thanks for the thread. I tried using the code but the prompt message is 'phone is personalized'. Please what do I do, kindly help me out.
Click to expand...
Click to collapse
U need an Unlock code now.search for it on google mentioning ur operator and remember u have to pay money for it maybe 10-30 $ or more.
Dnt frget to press thnx
---------- Post added at 08:16 AM ---------- Previous post was at 08:13 AM ----------
[/COLOR]
Zai23 said:
I tried that and it didn't work.
Click to expand...
Click to collapse
Do u installed purify with it ?? it can be installed inside the settings of app.after that retry the rooting process.Also tell me what is the error being shown while u r trying.If not work try atleast 3-4 previous versions of kingroot.otherwise u hv to find other methods of rooting
If you are trying to unlock it, I believe firmware M15020e or M15020d can be unlocked for like 2.00 (via ebay)
the newer firmwares L, M etc.. cannot.
Your firmware will be listed on the box or in settings/about phone info
If you have the newer firmware, you could possibly "downgrade" to the m15020 d or e version.
Downgrade new LG-M150 phones
wogeboy said:
If you are trying to unlock it, I believe firmware M15020e or M15020d can be unlocked for like 2.00 (via ebay)
the newer firmwares L, M etc.. cannot.
Your firmware will be listed on the box or in settings/about phone info
If you have the newer firmware, you could possibly "downgrade" to the m15020 d or e version.
Click to expand...
Click to collapse
By now downgrade is the best solution to unlock this device with M15020L/M/N firmware. If someone with the older firmware (E,D) that actually can be unlocked, pls submit it so we can downgrade, even when we'll still need a method to do so, cause there's no LGUP DLL for this model yet.
Secret dialer code for built-in debug menu *#*#1472365#*#*

LG G4 H815 running MM with Anti-rollback version 4 !!!!!!!

Helle everyone, I recently purchased an LG G4 H815 running MM from eBay, it is supposed to be INTERNATIONAL VERSION, but I had noticed first that Android PAY does not work (when I try to launch the app it does not let me in and says that I am running a custom ROM or I have a rooted phone or unlocked bootloader) which none I personally did. Then I tried to verify my anti-rollback version because I couldn't update to Nougat, the HIDDEN MENU code supposed to work for my model H815 didn't work, but instead, the code related to the American versions (ATT and T-Mo) WORKED, AND MY DEVICE HAS anti-rollback version = 4 !!!! as far as I know, the most recent one is 3, how is that even possible??? (see Pictures for more infos)
( Unfortunately I couldn't figure out a way to upload pictures here so here is a link to Imgur)
imgur (.) com/a/bPSk3
Thanks for any further help or infos.
DjMaxTn said:
Helle everyone, I recently purchased an LG G4 H815 running MM from eBay, it is supposed to be INTERNATIONAL VERSION, but I had noticed first that Android PAY does not work (when I try to launch the app it does not let me in and says that I am running a custom ROM or I have a rooted phone or unlocked bootloader) which none I personally did. Then I tried to verify my anti-rollback version because I couldn't update to Nougat, the HIDDEN MENU code supposed to work for my model H815 didn't work, but instead, the code related to the American versions (ATT and T-Mo) WORKED, AND MY DEVICE HAS anti-rollback version = 4 !!!! as far as I know, the most recent one is 3, how is that even possible??? (see Pictures for more infos)
( Unfortunately I couldn't figure out a way to upload pictures here so here is a link to Imgur)
imgur (.) com/a/bPSk3
Thanks for any further help or infos.
Click to expand...
Click to collapse
There are many Frankenstein devices out there.. One thing is 100%: you have a refurbished device. So it's definitively NOT a pure h815.
H815 devices have no ARB!
Please make a backup of your device with SALT ( https://bit.do/SALTatXDA ) - basic is fine. And share the resulting files i.e. via Google drive.
Having that backup is crucial important regardless. And I want to take a look into your bootloader stack to find out which one is installed.
Sent from my LG-H815 using XDA Labs
steadfasterX said:
There are many Frankenstein devices out there.. One thing is 100%: you have a refurbished device. So it's definitively NOT a pure h815.
H815 devices have no ARB!
Please make a backup of your device with SALT ( ) - basic is fine. And share the resulting files i.e. via Google drive.
Having that backup is crucial important regardless. And I want to take a look into your bootloader stack to find out which one is installed.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Thanks for the reply man, i really appreciate it.
1/ Yes it is a refurbished device
2/ I think it is Sprint version LS991 (according to the ABR - Sprint is the only version that has version 4)
3/ I checked the IMEI online and it confirms that it is a SPRINT device
3/ I found online that there is some CUSTOM ROMs that "converts" literally any version to H815 (mine shows 4g LTE logo when I am using ONLY 3G WCDMA in settings)
How to retreive the bootloader stack info in order to share it here for you to take a look ?
I am now trying to install SALT in LINUX - I will keep you up-to-date
DjMaxTn said:
Thanks for the reply man, i really appreciate it.
1/ Yes it is a refurbished device
2/ I think it is Sprint version LS991 (according to the ABR - Sprint is the only version that has version 4)
3/ I checked the IMEI online and it confirms that it is a SPRINT device
3/ I found online that there is some CUSTOM ROMs that "converts" literally any version to H815 (mine shows 4g LTE logo when I am using ONLY 3G WCDMA in settings)
How to retreive the bootloader stack info in order to share it here for you to take a look ?
I am now trying to install SALT in LINUX - I will keep you up-to-date
Click to expand...
Click to collapse
Making a backup with SALT will also get the bootloader stack. Just share the files afterwards.
Sent from my LG-H815 using XDA Labs
steadfasterX said:
Making a backup with SALT will also get the bootloader stack. Just share the files afterwards.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
So i installed SALT successfully, put the device is download mode, but SALT does not detect it!!
It throws an ERROR NO DEVICE CONNECTED (see picture)
imgur.com/a/syp7V
steadfasterX said:
Making a backup with SALT will also get the bootloader stack. Just share the files afterwards.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Finally got it working here is the screenshot imgur.com/a/Kf5xI
And here are the files retrieved using SALT https://goo.gl/ch2FHr
DjMaxTn said:
Finally got it working here is the screenshot imgur.com/a/Kf5xI
And here are the files retrieved using SALT https://goo.gl/ch2FHr
Click to expand...
Click to collapse
Pls paste the SALT debug log in advanced menu as well. It's enough directly when started SALT with the device connected.
Many thx
Nvm got it. The important stuff is in your screenshot.
You have a converted device. Meaning you have the ls991 bootloader stack plus the h815 system. This is possible but more interesting would be: is your SIM working? Do you get mobile Internet? 3g,4g?
Sent from my LG-H815 using XDA Labs
steadfasterX said:
Pls paste the SALT debug log in the advanced menu as well. It's enough directly when started SALT with the device connected.
Many Thx
Nvm got it. The important stuff is in your screenshot.
You have a converted device. Meaning you have the ls991 bootloader stack plus the h815 system. This is possible but more interesting would be: is your SIM working? Do you get mobile Internet? 3g,4g?
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Many thanks for reply, yes everything works fine (Android Pay does not work), DATA works fine BUT even using ONLY GSM/3G WCDMA (no LTE) in the settings, I always see the 4g LTE logo when using DATA, I think they somehow changed/ replaced the 3g data logo in the status bar with 4g LTE logo, in order to make the user believe the device is compatible with his LTE carrier frequency (which is not correct of course)
This SPRINT device does not support LTE in the country I am using it in (Czech Republic), I verified it with the help of willlmyphonework.com website.
This is really so disgusting and unfaithful behaviour from SOME Chinese sellers on eBay, the SPRINT version is the cheapest one, so in order to RIP off customers, they CONVERT these models to H815 in order to sell them for more, and not everyone would have the knowledge to dig deep into the device info in order to verify the legitimacy of their product specs, this is sad...
Anyway, what should I do now which this devise? how can I at least install Nougat or have the OFFICIAL firmware without breaking the device??
Thanks for your time and precious information
DjMaxTn said:
Many thanks for reply, yes everything works fine (Android Pay does not work), DATA works fine BUT even using ONLY GSM/3G WCDMA (no LTE) in the settings, I always see the 4g LTE logo when using DATA, I think they somehow changed/ replaced the 3g data logo in the status bar with 4g LTE logo, in order to make the user believe the device is compatible with his LTE carrier frequency (which is not correct of course)
This SPRINT device does not support LTE in the country I am using it in (Czech Republic), I verified it with the help of willlmyphonework.com website.
This is really so disgusting and unfaithful behaviour from SOME Chinese sellers on eBay, the SPRINT version is the cheapest one, so in order to RIP off customers, they CONVERT these models to H815 in order to sell them for more, and not everyone would have the knowledge to dig deep into the device info in order to verify the legitimacy of their product specs, this is sad...
Anyway, what should I do now which this devise? how can I at least install Nougat or have the OFFICIAL firmware without breaking the device??
Thanks for your time and precious information
Click to expand...
Click to collapse
Well.. We don't know if it is a ls991 or a h815 or a complete other device. The only way to say this for sure is to open the device and looking on the mainboard(!). But regardless you have a fusing device now and so you cannot install a h815 bootloader stack anymore. Say thx to ARB ( https://bit.do/antirollg4 ) which can hard brick your device.
It SEEMS that you can boot h815 ROMs but if you try to replace the bootloader stack coming with the N zip or the TOT (which you can find here on XDA) it will hard brick.
Interesting is that h815 is able to boot. It MAY be possible to boot N by just replacing modem, system and boot partition though. That depends on your bootloader stack.
Try to boot into fastboot from android:
adb reboot bootloader
You should see the fastboot screen. Could you make a photo of that? We MAY have luck and its a special one.
Sent from my LG-H815 using XDA Labs
steadfasterX said:
Well.. We don't know if it is a ls991 or a h815 or a complete other device. The only way to say this for sure is to open the device and looking on the mainboard(!). But regardless you have a fusing device now and so you cannot install a h815 bootloader stack anymore. Say thx to ARB ( https://bit.do/antirollg4 ) which can hard brick your device.
It SEEMS that you can boot h815 ROMs but if you try to replace the bootloader stack coming with the N zip or the TOT (which you can find here on XDA) it will hard brick.
Interesting is that h815 is able to boot. It MAY be possible to boot N by just replacing modem, system and boot partition though. That depends on your bootloader stack.
Try to boot into fastboot from android:
adb reboot bootloader
You should see the fastboot screen. Could you make a photo of that? We MAY have luck and its a special one.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Unfortunately this command adb reboot bootloader just reboots the phone normally to android ( normal reboot)
I couldnt boot into fastboot because the Send command returns FAIL when I type id (so i cant move on in the process ...) Maybe locked bootloader??
DjMaxTn said:
Unfortunately this command adb reboot bootloader just reboots the phone normally to android ( normal reboot)
I could it boot into fastboot because the Send command returns FAIL when I type id (so i cant move on in the process ...) Maybe locked bootloader??
Click to expand...
Click to collapse
Too bad. Try that :
Power off phone
Press vol down and keep it pressed
While doing so plugin the USB cable and wait
You may see fastboot now.
Sent from my LG-H815 using XDA Labs
steadfasterX said:
Too bad. Try that :
Power off phone
Press vol down and keep it pressed
While doing so plugin the USB cable and wait
You may see fastboot now.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
No luck, the phone starts to charge while turned off and connected to the computer, there is something really strange going on here, it is like this mode had been blocked or something....
DjMaxTn said:
No luck, the phone starts to charge while turned off and connected to the computer, there is something really strange going on here, it is like this mode had been blocked or something....
Click to expand...
Click to collapse
Well no. Some firmwares do not allow to boot into fastboot that's not that unlikely.
So what I can say is that you have a ls991 bootloader stack with a h815 system so it MAY be possible to install nougat but not yet. I will integrate flashing partitions to SALT soon. Until then you have to wait.
Sent from my LG-H815 using XDA Labs
steadfasterX said:
Well no. Some firmwares do not allow to boot into fastboot that's not that unlikely.
So what I can say is that you have a ls991 bootloader stack with a h815 system so it MAY be possible to install nougat but not yet. I will integrate flashing partitions to SALT soon. Until then you have to wait.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Has the flashing per folder been implemented? I think I may have the same problem with the OP. AT&T device with H815 system and ARB 3.
tjlabais said:
Has the flashing per folder been implemented? I think I may have the same problem with the OP. AT&T device with H815 system and ARB 3.
Click to expand...
Click to collapse
read the SALT thread. I provide changelogs for every release.
flashing is possible even now in a beta state. waiting on IRC (read the SALT thread - OP) is the only way if you want to participate on the beta test.
.
steadfasterX said:
read the SALT thread. I provide changelogs for every release.
flashing is possible even now in a beta state. waiting on IRC (read the SALT thread - OP) is the only way if you want to participate on the beta test.
.
Click to expand...
Click to collapse
Hello! I have similar situation I have H815 ... but LGUP says H81521y it seems it has some strange software/modem/rom uploaded. It is marshmallow 6.0 I cannot get into fastboot mode so I cannot unlock bootloader. I tried to install TOT of Nougat via LGUP but no luck cause it turned out I have antirollback V3.
Is it possible for me to install TWRP and then any custom ROM? I don't know what to do right now...
remialfa said:
Hello! I have similar situation I have H815 ... but LGUP says H81521y it seems it has some strange software/modem/rom uploaded. It is marshmallow 6.0 I cannot get into fastboot mode so I cannot unlock bootloader. I tried to install TOT of Nougat via LGUP but no luck cause it turned out I have antirollback V3.
Is it possible for me to install TWRP and then any custom ROM? I don't know what to do right now...
Click to expand...
Click to collapse
Did you try unlocking the official way through LG website?
https://developer.lge.com/resource/mobile/RetrieveBootloader.dev
The LG G4 H815 is officially unlockable
DjMaxTn said:
Did you try unlocking the official way through LG website?
https://developer.lge.com/resource/mobile/RetrieveBootloader.dev
The LG G4 H810 is officially unlockable
Click to expand...
Click to collapse
It seems it's H815 with AT&T Software with anti rollback v3. Adb reboot bootloader just restarts the phone, I tried to enter bootloader by keys combination. It enters firmware update mode.
I think due to v3 rollback I cannot do anything with this phone, am I right?
remialfa said:
It seems it's H815 with AT&T Software with anti rollback v3. Adb reboot bootloader just restarts the phone, I tried to enter bootloader by keys combination. It enters firmware update mode.
I think due to v3 rollback I cannot do anything with this phone, am I right?
Click to expand...
Click to collapse
Correct (axcording to my experience). I had the same issue with my previous phone. It turned out to be a ls991 with H815 software.
The only way to know your Hardware is to take a look inside the phone , you will find it printed on the motherboard.
DjMaxTn said:
Correct (axcording to my experience). I had the same issue with my previous phone. It turned out to be a ls991 with H815 software.
The only way to know your Hardware is to take a look inside the phone , you will find it printed on the motherboard.
Click to expand...
Click to collapse
Mine has H815 printed on antenna and few other parts, in system it also says H815 in LGUP its H81521Y I think it's H815 with AT&T bootloader and therefore they flashed anti rollback V3 so at this point I cannot do anything...

Please need LG G4 H81021z-22f stock firmware or OTA update files

Hello guys.
i have freezing problems with my LG G4 H81021y so i am trying to update it, so it may solve the problem.
So if any one have an update files or stock firmware for AT&T LG G4 please give a link
OR if you have a solution for this freezing problem i would appreciate any sort help
Really no one has update files for LG G4 H810 :crying:
bimad99 said:
Hello guys.
i have freezing problems with my LG G4 H81021y so i am trying to update it, so it may solve the problem.
So if any one have an update files or stock firmware for AT&T LG G4 please give a link
OR if you have a solution for this freezing problem i would appreciate any sort help
Click to expand...
Click to collapse
You could try a factory restore if you haven't already. Also, the LG Bridge app for your pc (download from LG site), may provide an update or an option to reinstall your firmware.
The alternative is to check (private message) with other H810 XDA owners in relevant threads to see if someone has a copy of a suitable stock firmware.
Note: If you want to install a custom rom to update to the latest security patches, etc., , you can unlock your bootloader unofficially with steadfasterX's brilliant work (many H810 users have gone this route now) - check it out here: [UNLOCK][UNOFFICIAL][G4] Unlock **ANY** LG G4 device with UsU. Read the OP thoroughly and make sure you understand it fully. You will have to have an ARB version of two or less in order to go this route, so before upgrading to any other H810 firmware, check your ARB version with SALT.
sdembiske said:
You could try a factory restore if you haven't already. Also, the LG Bridge app for your pc (download from LG site), may provide an update or an option to reinstall your firmware.
The alternative is to check (private message) with other H810 XDA owners in relevant threads to see if someone has a copy of a suitable stock firmware.
Note: If you want to install a custom rom to update to the latest security patches, etc., , you can unlock your bootloader unofficially with steadfasterX's brilliant work (many H810 users have gone this route now) - check it out here: [UNLOCK][UNOFFICIAL][G4] Unlock **ANY** LG G4 device with UsU. Read the OP thoroughly and make sure you understand it fully. You will have to have an ARB version of two or less in order to go this route, so before upgrading to any other H810 firmware, check your ARB version with SALT.
Click to expand...
Click to collapse
thanks for reply.
I already tried the factory reset, but no lights on.
Tha LG Bridge won't work as i know cuz i don't have active AT&T Sim card and i don't live in tha usa.
Asking other H810 XDA Owners for a suitable stock firmware, i really didn't think about it so i will give it a try.
My H810 already have H81021y software which has ARB 3. so no root for me, i guess :crying:
bimad99 said:
thanks for reply.
I already tried the factory reset, but no lights on.
Tha LG Bridge won't work as i know cuz i don't have active AT&T Sim card and i don't live in tha usa.
Asking other H810 XDA Owners for a suitable stock firmware, i really didn't think about it so i will give it a try.
My H810 already have H81021y software which has ARB 3. so no root for me, i guess :crying:
Click to expand...
Click to collapse
Yes, no root, no bootloader unlock for you, unfortunately.
However, ALL MAY NOT BE LOST ... check out this thread that I found: link... to Android 6.0 MM h81021y archive tot
There are a couple of links to the firmware you seem to be looking for. It is a TOT file but you should be able to flash it following the TOT method as outlined in this thread: [Guide] LG G4 Stock Firmware (Go Back to Stock) KDZ & TOT Method - scroll down to the TOT method.
Good luck.
bimad99 said:
Hello guys.
i have freezing problems with my LG G4 H81021y so i am trying to update it, so it may solve the problem.
So if any one have an update files or stock firmware for AT&T LG G4 please give a link
OR if you have a solution for this freezing problem i would appreciate any sort help
Click to expand...
Click to collapse
Could also be the ilapo if a factory reset does not solve it.
Sent from my OnePlus 6T using XDA Labs
steadfasterX said:
Could also be the ilapo if a factory reset does not solve it.
Sent from my OnePlus 6T using XDA Labs
Click to expand...
Click to collapse
The ilapo !! what do you mean ??
Does anyone knows what this ilapo thing is ?
bimad99 said:
The ilapo !! what do you mean ??
Click to expand...
Click to collapse
uhm what about using the search box ???
Also find the bootloop fix list in my signature .
Still its just a guess . Check the first 3 digits of your serial (sticker behind the battery). If it starts with 603 or lower you board will be sooner or later affected by the ilapo .
Sent from my OnePlus 6T using XDA Labs

LG G4 Anti-rollback what can i do?

I want to root an LG g4, the bootloader and/or recovery seem to be missing from the device. Purchased used off ebay. Is the LG LS991 [H811] Model (Sprint) (also seller claimed its unlocked and that seems to be so when i tested my sim). I can only get the phone into download mode, so when i check it with SALT I see the antirollback says "40". I heard the term frankenstine device thrown around before. IS it even possible to root this phone anymore? IS it possible to get access to the bootloader? I feel like i've been walking around in the dark for a while. I would greatly appreciate any advice
SolidIcecube said:
I want to root an LG g4, the bootloader and/or recovery seem to be missing from the device. Purchased used off ebay. Is the LG LS991 [H811] Model (Sprint) (also seller claimed its unlocked and that seems to be so when i tested my sim). I can only get the phone into download mode, so when i check it with SALT I see the antirollback says "40". I heard the term frankenstine device thrown around before. IS it even possible to root this phone anymore? IS it possible to get access to the bootloader? I feel like i've been walking around in the dark for a while. I would greatly appreciate any advice
Click to expand...
Click to collapse
In SALT switch to develop mode (SALT thread FAQ tells how) and then check the ARB again
steadfasterX said:
In SALT switch to develop mode (SALT thread FAQ tells how) and then check the ARB again
Click to expand...
Click to collapse
Hi, I've got a similar issue. US991 bought new 2017 from LG via newegg. Advertised unlocked, assumed that just meant carrier unlocked, which it is, but also has OEM unlock flag in developer options. LGMENU shows ARB=2 but SALT stable shows ARB=20 so won't flash USU. SALT develop mode shows ARB=2.
Do I USU from develop mode? Does this one need USU (have never tried to flash TWRP or root or anything. Any help/guidance is welcome. the MM LG pushed to it in 2017 doesn't have firmware support for VOLTE which i was hoping to get by flashing a new ROM since i have have no calling since the AT&T 3G shutdowm.
ldh37 said:
Hi, I've got a similar issue. US991 bought new 2017 from LG via newegg. Advertised unlocked, assumed that just meant carrier unlocked, which it is, but also has OEM unlock flag in developer options. LGMENU shows ARB=2 but SALT stable shows ARB=20 so won't flash USU. SALT develop mode shows ARB=2.
Do I USU from develop mode? Does this one need USU (have never tried to flash TWRP or root or anything. Any help/guidance is welcome. the MM LG pushed to it in 2017 doesn't have firmware support for VOLTE which i was hoping to get by flashing a new ROM since i have have no calling since the AT&T 3G shutdowm.
Click to expand...
Click to collapse
only H811 does NOT need UsU. The h815 can be unlocked as well but only when you have the unlock bin already as the LG website closed. so: yes you need UsU.
yes keep SALT on develop and flash UsU there. The good thing is that FAQ #1 applies to your device so you could even go back if something is not working as you want it.
Thanks for your help steadfasterX.
US991_UsU_unlock.zip in develop mode worked great.
twrp-3.5.2_9-PREVIEW-275_g4.img worked great.
however, i have a new issue. when i flashed US991_UsU_baseband_flash-in-twrp.zip my SIM is no longer recognized; mobile data can't be enabled, says connection not allowed so can't add an APN. LGMENU shows normal APNs (ATTPHONE, NEXTGENPHONE, etc are gone). has a couple prepay APNs listed that i don't recognize and can't edit thru LGMENU. SALT GPT is H811 which i thought was just for the ROMs. do i need to actually flash H811 basebands? or just flash one of your H811 ROMs like lineage 18.1? not sure how to fix this. again, any help/guidance is much appreciated.
steadfasterX said:
only H811 does NOT need UsU. The h815 can be unlocked as well but only when you have the unlock bin already as the LG website closed. so: yes you need UsU.
yes keep SALT on develop and flash UsU there. The good thing is that FAQ #1 applies to your device so you could even go back if something is not working as you want it.
Click to expand...
Click to collapse
Thanks for your help steadfasterX.
US991_UsU_unlock.zip in develop mode worked great.
twrp-3.5.2_9-PREVIEW-275_g4.img worked great.
however, i have a new issue. when i flashed US991_UsU_baseband_flash-in-twrp.zip my SIM is no longer recognized; mobile data can't be enabled, says connection not allowed so can't add an APN. LGMENU shows normal APNs (ATTPHONE, NEXTGENPHONE, etc are gone). has a couple prepay APNs listed that i don't recognize and can't edit thru LGMENU. SALT GPT is H811 which i thought was just for the ROMs. do i need to actually flash H811 basebands? or just flash one of your H811 ROMs like lineage 18.1? not sure how to fix this. again, any help/guidance is much appreciated.
ldh37 said:
Thanks for your help steadfasterX.
US991_UsU_unlock.zip in develop mode worked great.
twrp-3.5.2_9-PREVIEW-275_g4.img worked great.
however, i have a new issue. when i flashed US991_UsU_baseband_flash-in-twrp.zip my SIM is no longer recognized; mobile data can't be enabled, says connection not allowed so can't add an APN. LGMENU shows normal APNs (ATTPHONE, NEXTGENPHONE, etc are gone). has a couple prepay APNs listed that i don't recognize and can't edit thru LGMENU. SALT GPT is H811 which i thought was just for the ROMs. do i need to actually flash H811 basebands? or just flash one of your H811 ROMs like lineage 18.1? not sure how to fix this. again, any help/guidance is much appreciated.
Click to expand...
Click to collapse
well there are 2 problems here:
1. not many us991 users here so less user feedback
2. usually no one wants to stay stock so less user feedback
the main problem is that the baseband files are incompatible with your bootloader stack (hopefully its just that). a fix for that would be creating a new baseband flash file from your modem partition. pls provide it from your backup BEFORE using UsU and I can take a look
steadfasterX said:
well there are 2 problems here:
1. not many us991 users here so less user feedback
2. usually no one wants to stay stock so less user feedback
the main problem is that the baseband files are incompatible with your bootloader stack (hopefully its just that). a fix for that would be creating a new baseband flash file from your modem partition. pls provide it from your backup BEFORE using UsU and I can take a look
Click to expand...
Click to collapse
Thank's again for your help. attached is pre-USU modem from SALT backup
ldh37 said:
Thank's again for your help. attached is pre-USU modem from SALT backup
Click to expand...
Click to collapse
hmm seems it was not attached
steadfasterX said:
hmm seems it was not attached
Click to expand...
Click to collapse
damn. let me try that again.
ldh37 said:
damn. let me try that again.
Click to expand...
Click to collapse
sorry for the delay, went to vacation...
pls try the attached one and let me know how it goes!

Categories

Resources