Bought G4 - have couple of questions - G4 Q&A, Help & Troubleshooting

Hi,
1. Is there any option (and guide) how to change stock firmware branded to stock firmware unbranded? And don't loose warranty if I want to repair phone?
2. Why G4 have so small community? This phone is great. Isn't it?

hexen88 said:
Hi,
1. Is there any option (and guide) how to change stock firmware branded to stock firmware unbranded? And don't loose warranty if I want to repair phone?
Click to expand...
Click to collapse
Depends on your model. I think you can just flash an unbranded kdz, if you're on H815 International.
Just use LGUP, download the proper kdz and select "refurbish", when installing via LGUP (note: this will wipe your data and system).
Official LGUP thread
20D kdz from @autoprime
Please note that this kdz is only for H815 - you can check device model under settings --> hardware information
EDIT: You don't have to be rooted or bootloader unlocked to use LGUP - So this won't affect warranty

Related

G4 Conversion Question

Im wanting to Convert my EE UK H815 to an Open Europe G4. I can flash any KDZ, the Software version under > About Phone > Software Info> is always:
V10c-234-30 (I assume the "234.30" is EE UK).
Im wanting to Convert it to:
V10c.EUR.XX
Do I have to Unlock the Bootloader, then flash the Open Europe Rom.. to convert it.
Thanks
You are not required to unlock the bootloader in order to flash any kdz's, for safe operation backup your files from the device to pc/laptop then load your kdz up and do a CSE flash which will minimize the appearance of errors
Be careful when "converting" to another variant's firmware. You can very easily complete f-up your modem.
Hmmm, Good point. Im just wondering whether I should just leave the phone alone and get the updates as and when EE release them.
I think you mis-understand me CraigHardy. Ive flashed about 3 KDZ roms on my G4 using the methord on here. The roms flash on the device fine.. UK, Open EU and General EU.. all work great, BUT.. after flashing the Software Version under Settings > About Phone still says "234.30", instead of "EUR.XX", which means EE UK mustve somehoiw locked the bootloader of altered the EFI partition before retail, so that EE users always have an EE phone connected to EE servers, with EE OTAs. I want to make my G4 EUR.xx so I can get an OTA from LG on release day instead of waiting weeks for EE.
So do I need to unlock the bootloader to make my G4 EUR.xx, or is there a different way, however, if it is EEs bootloader and I cant re-lock it from LG, ill wait and support the XDA devs..

LG G4 signal issues after update

hello xda,
i bought (from ebay) an LG g4 h815t from hong kong. it come with android 5 pre-installed and everything works fine.
i decidet to update the phone to mm (via lg bridge) and now the signal is very very poor (alomost without coverage for all day)
Any idea?
thank you very much
Go back to LP since u cant flash modems via twrp since ur g4s bootloader is locked ..
Use lgup refurbish downlod the kdz the file search here on xda
jinderation said:
Go back to LP since u cant flash modems via twrp since ur g4s bootloader is locked ..
Use lgup refurbish downlod the kdz the file search here on xda
Click to expand...
Click to collapse
i'll try, thank you

USA H815, Help please

Hi! I bought a H815 version, foe a steal btw, "130$" Thinking that I could unlock the bootloader, but then doing more research only finding that the only way doing so is if I have a EU version.
So anyone know anyway I could trade or buy a EU or UK version for cheap so I could trade or it doesn't anyone know the status of the USA H815 bootloader status?
Also wtff why isn't the H815 version upgraded to marshmallow? This stock ROM is majorly broken .
tmobile one can be bootloader unlocked. h811.
I just did the same thing, got a h815 USA with locked bootloader.
Using LGUP I was able to flash version 20d MM and it is working fine.
You could try https://www.reddit.com/r/phoneswap/
I've got 20j MM running on my USA H815.
I updated with the .kdz file from here: http://forum.xda-developers.com/g4/general/kdz-firmware-v20j-united-kingdom-2016-t3518925
I used the installers and software from here: http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
Note that in the LGUP application, you need to click Update to select a .kdz file. You then need to exit and restart the program, then click refurbish to do a clean flash.

[Guide] How to recover from "This phone is permanently locked and cannot be unlocked"

[Guide] How to recover from "This phone is permanently locked and cannot be unlocked"
The story:
So I have a V30+ with AS998 carrier, then I Frankenstein it to US998 and unlock bootloader and flash TWRP and all is good. But the signal is pretty bad since I live in South East Asia. Then I tried to flash the H930 OpenEU 21A zip rom from westwood 24. Well, it boot fine but i have no service after tapering around for many method (which many said the only solution is to send it back), I tried the"2945#*930# and the sim unlock screen says ""This phone is permanently locked and cannot be unlocked"". I tried flash back the Us998 kdz by LGUp, same message, flash the AS998 kdz also same message and no service
So I wrote this for anyone later encounter this problem
tl;dr
The solution is rather simple: flash back to nougat stock us998 kdz via dl parition in LGUP then back to oreo US998. :good:
Hello,
Mrxyzl said:
[Guide] How to recover from "This phone is permanently locked and cannot be unlocked"
The story:
So I have a V30+ with AS998 carrier, then I Frankenstein it to US998 and unlock bootloader and flash TWRP and all is good. But the signal is pretty bad since I live in South East Asia. Then I tried to flash the H930 OpenEU 21A zip rom from westwood 24. Well, it boot fine but i have no service after tapering around for many method (which many said the only solution is to send it back), I tried the"2945#*930# and the sim unlock screen says ""This phone is permanently locked and cannot be unlocked"". I tried flash back the Us998 kdz by LGUp, same message, flash the AS998 kdz also same message and no service
So I wrote this for anyone later encounter this problem
tl;dr
The solution is rather simple: flash back to nougat stock us998 kdz via dl parition in LGUP then back to oreo US998. :good:
Click to expand...
Click to collapse
Thanks for the tutorial.
I know it's been a few years already, but do you remember did you tick all partitions (select all) or exclude any of them?
ardian1899 said:
Hello,
Thanks for the tutorial.
I know it's been a few years already, but do you remember did you tick all partitions (select all) or exclude any of them?
Click to expand...
Click to collapse
Uh it's been too long that I can't remember what did I tick. But I think I tick all partition.
Mrxyzl said:
Uh it's been too long that I can't remember what did I tick. But I think I tick all partition.
Click to expand...
Click to collapse
I see..
Mine is actually v50s. Has that problem but it seems the trick isnt for v50s.
But thanks anyway..
ardian1899 said:
I see..
Mine is actually v50s. Has that problem but it seems the trick isnt for v50s.
But thanks anyway..
Click to expand...
Click to collapse
I've also the same issue
Any solution please
Mrxyzl said:
[Guide] How to recover from "This phone is permanently locked and cannot be unlocked"
The story:
So I have a V30+ with AS998 carrier, then I Frankenstein it to US998 and unlock bootloader and flash TWRP and all is good. But the signal is pretty bad since I live in South East Asia. Then I tried to flash the H930 OpenEU 21A zip rom from westwood 24. Well, it boot fine but i have no service after tapering around for many method (which many said the only solution is to send it back), I tried the"2945#*930# and the sim unlock screen says ""This phone is permanently locked and cannot be unlocked"". I tried flash back the Us998 kdz by LGUp, same message, flash the AS998 kdz also same message and no service
So I wrote this for anyone later encounter this problem
tl;dr
The solution is rather simple: flash back to nougat stock us998 kdz via dl parition in LGUP then back to oreo US998. :good:
Click to expand...
Click to collapse
Thanks for sharing
The thing which i couldn't understand is,
"flash back to nougat stock us998 kdz via dl parition in LGUP then back to oreo US998"
What was the original OS and what to flash please

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

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