Cannot unlock bootloader on a repaired H815 - G4 Q&A, Help & Troubleshooting

My bootloader unlocked H815 suddenly froze (hard bricked) with no response to anything other than the boot screen.
Sent it for repair. They replaced the CPU and RAM. The repaired H815 came back locked with 10C.
The IMEI stayed the same, but the device ID was changed (fastboot...devic-id).
When trying to obtain a new UNLOCK.BIN file on the LG developers site, I get the message that my device ID does not match.
I managed to root the H815, but I cannot install a recovery (TWRP). This prevents me from installing any ZIP file since I have no access to recovery (XPOSED, V4android, etc.).
Please advice
Thanks

Anyone?

U should email lg developer for help.. I saw a lot of people facing this problem also

Sent my IMEI and new Device ID to LG (via LGE Developer site)
waiting for the new key file
Waiting for the Sקמא צט

I just sent a mail to developer (at) lge.com with the same problem. The IMEI stayed the same, but the Device-ID changed when they replaced the motherboard. I had unlocked my g4 before it went in repairs. Actually the combination Genesys MM with xposed 79, G4 tweaksbox, the lack of recovery installed and USB debugging disabled is what hard bricked my phone in the first place. Something made LGUP unable to find the model of the phone.
I will update this post with any response I get from the email.
UPDATE:
It worked. They asked me to send a photo of the back of my phone (with IMEI number). After that they said I could try again and that the site should now give me the unlock.bin. It did.
Thanks LG!

Related

"Enter PIN/password to decrypt", "30/30 attempts remaining"

hello all,
i bought an lg g3 from ebay used one ,
i got this message when i turned on the phone
"Enter PIN/password to decrypt", "30/30 attempts remaining"
also when i put a sim card i got this message
"this phone is permanently locked and cannot be unlocked "
tried to do factory rest got error
emmc error 150
then tried to flash anew stock rom its stuck at 6%
device D850 at&t LG g3
Regards
Return the phone. Open a dispute for having your money back.
Whatever.
I also had same problem , i tried calling ATnT and they connected me to LG , LG said they have not even heard about it and as my phone is out of warranty (15 months), they cannot do anything about it.
Finally i showed this phone to a local cellphone repair shop in India, and they found it was a problem with numerous pattern incorrect entries , called as pattern lock and it can be undone by software unlock. Just few bucks.
Did you use the .tot restore method? As long as you can get into the boot loader you should be able to do a complete flash. Check out the guide here
Either way, it sounds like the seller of the phone may have gotten ransomware, or just knowingly sold an encrypted phone. The seller shafted you and you should leave negative feedback and also do what joooe said, and open a dispute immediately.
If you flash ROM LineageOS 14 on your device, doesn't exist this problem.
I had this problem
I used latest rom for my phone region (UAE) and flashed (refourbished) by UPPERCUT_1.0.0.0
and my problem solved.

[LG G4][Issue] IMEI in software different from the one in back label unable to Unlock

have an LG G4 H815 I'm facing problem with low level network & loose of LTE so i wanted to unlock my device to gain more solutions but when i put my imei in LG developers site. I got the answer that my device ID don't match the imei so i tried the Imei found in the back label . the same thing i got the same answer. So now im unable to unlock my device
Looks like you are using a refurbished device, go check your hardware IMEI to identity your device, only H811 or H815 gets BL unlocked
valest said:
Looks like you are using a refurbished device, go check your hardware IMEI to identity your device, only H811 or H815 gets BL unlocked
Click to expand...
Click to collapse
How to do this check i mean how to check the real IMEI which is compatible with the Device ID
dailybarid said:
How to do this check i mean how to check the real IMEI which is compatible with the Device ID
Click to expand...
Click to collapse
Dial *#06# will give you your hardware IMEI, that's the real IMEI.
Open a new tab,copy the link below and paste your IMEI after the “=”
http://www.lgbbs.com/LGB2B/IMEI.php?IMEI=YOUR IMEI
You won't be able to unlock your bootloader unless you have a label under your battery that has same IMEI as what shows by dialing *#06#. This is only done if repaired by LG authorised repairer.
LG will ask for photo proof of the label and even the barcode has to match. Trust me I changed my own motherboard and they don't want to know about it!
Send a mail to lg [email protected] and ask for unlock. like this:
Hello,
I tried to bootloader unlock my LG g4 H815 but i got device ID mismatch using official unlock web site.
The mainboard was replaced in aug. 2016 under warrenty. (LG Germany).
What can i do to unlock the bootloader of this device?
Best regards
walter79
Answer by lg:
Hello,
*
We apologize for any inconvenience.
*
it may not match due to the replacement.
*
If so, please send us the following:
- The new Device ID copied from the DOS command window as text.
(You can copy the Device ID with the right button of your mouse.)
- A label photo file (less than 200KB) taken from the back of the phone.
(You can find the label when you remove the battery.)*
** In the photo, the label must be visible on the back of the phone.
*
We are now providing an interim solution for this issue.
Hello,
*
We apologize for the delay and any inconvenience caused.
**last week was the Korean Thanksgiving (Chu-Seok) holiday period.*
*
You can now unlock the bootloader of your phone at Unlock Bootloader page. Please try again.
*
Best Regards,
LG Developer site Team
dailybarid said:
have an LG G4 H815 I'm facing problem with low level network & loose of LTE so i wanted to unlock my device to gain more solutions but when i put my imei in LG developers site. I got the answer that my device ID don't match the imei so i tried the Imei found in the back label . the same thing i got the same answer. So now im unable to unlock my device
Click to expand...
Click to collapse
For me the problem was taht serial number from Lg dev site (they said to find my serial number in about phone ) did not match the back phone label . SO I entered the serial number from the label and worked

Unable to access fastboot

Hi,
I just got a refurbished LG G4, and i'm unable to reboot to fastboot mode. I want to install TWRP and LineageOS. Before that i have to unlock the bootloader.
I followed this guide : [HOWTO][H815] Complete Guide to Unlock Bootloader + TWRP + Root + Xposed + ViperFX . I'm stuck at "1. Unlocking the bootloader officially" -> viii) ...adb reboot bootloader etc...
I tried on Windows and GNU/Linux "adb reboot bootloader" and "adb reboot-bootloader", with and without administrator/super-user right without any success....
The phone reboot to Android. However the phone can reboot in recovery and download mode.
The phone is still in android 5.1, and come from T Mobile (the phone suggest upgrade from T Mobile).
One strange thing is the dmesg usb connection log on GNU/Linux :
Code:
[195563.124097] usb 2-2: new high-speed USB device number 43 using ehci-pci
[195563.257487] usb 2-2: New USB device found, idVendor=1004, idProduct=631d
[195563.257498] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[195563.257506] usb 2-2: Product: LGE Android Phone
[195563.257512] usb 2-2: Manufacturer: LG Electronics Inc.
[195563.257518] usb 2-2: SerialNumber: LGH81029e8b9d6
The serial number start with H810, and the phone is labelled H815 in the stickers under the battery, and on the info on Android...
What can I try to get the fastboot mode?
The refurbished phone says "H810" on download mode. The IMEI was modified too to appear be a H815, as the stickers etc... The phone is counterfeit...
Someone have/had the same problem?
Settings -> developer options -> OEM unlock enabled?
Sent from my LG-H815 using XDA Labs
Megagolgoth said:
The refurbished phone says "H810" on download mode. The IMEI was modified too to appear be a H815, as the stickers etc... The phone is counterfeit...
Someone have/had the same problem?
Click to expand...
Click to collapse
frankenphone maybe someparts from h810 and some from h815 and manipulated or edited software.. we had this in G2 alot. only wasy to find out was by looking at motherboard its printed what variant it is only looking at it physically. mean to take out on you hand and read the number model.
raptorddd said:
frankenphone maybe someparts from h810 and some from h815 and manipulated or edited software.. we had this in G2 alot. only wasy to find out was by looking at motherboard its printed what variant it is only looking at it physically. mean to take out on you hand and read the number model.
Click to expand...
Click to collapse
I requested a refund. The vendor falsified the IMEI and model number. The Android image seems to be frankenstein-like too. It proposes me to upgrade with "T-Mobile" (and fail at reboot), and the default welcome page on the web browser is att.net (after a complete wipe out)...
I don't know how to solve this problem. I need more LTE band (working but it's poor comparing to my Xperia Z1c). I have the band 7, but I need band 3, 20 and 28.
1. Which method (unlock bootloader, install TWRP, etc...) i must use the one for H815 or the one for the H810 ? Which image of Lineage OS ? Logically the H810 one?
2. Is there a way to revert back the phone to its original model and IMEI ?
3. Finding the original IMEI? Maybe with the original SN?
Install LG Phone From and run it,maybe you'll get more information...
welder73 said:
Install LG Phone From and run it,maybe you'll get more information...
Click to expand...
Click to collapse
I tried LG Bridge, and it detect the phone has a H815. When it tries to upgrade the phone, on the reboot, on download mode, the phone show information like H810 H81010o, and stay stuck here. The software on windows report a fail.
"LG Phone From" report a H815, with the IMEI on the label.
I read that it's possible to modify the model name(here on XDA) and the IMEI (QPSK or LG "something" by Octopuss). Seem's that some vendor in Aliexpress are not very straight...
Megagolgoth said:
I requested a refund. The vendor falsified the IMEI and model number. The Android image seems to be frankenstein-like too. It proposes me to upgrade with "T-Mobile" (and fail at reboot), and the default welcome page on the web browser is att.net (after a complete wipe out)...
I don't know how to solve this problem. I need more LTE band (working but it's poor comparing to my Xperia Z1c). I have the band 7, but I need band 3, 20 and 28.
1. Which method (unlock bootloader, install TWRP, etc...) i must use the one for H815 or the one for the H810 ? Which image of Lineage OS ? Logically the H810 one?
2. Is there a way to revert back the phone to its original model and IMEI ?
3. Finding the original IMEI? Maybe with the original SN?
Click to expand...
Click to collapse
not all phone can be unlocked. h810 cant. so try getting one of these in this list.
tell them when you upgrade it doent work cause its all messed up. you want refund or a phone from the list.
https://forum.xda-developers.com/g4/general/unlock-list-lg-g4-variants-unlocked-t3262621
Is there a way to revert back the phone to the correct model (H810) ?
I read this Lg G4 F500L - Fixing and Converting to International H815 Model
The solution is to modify the TOT file? How to do that ?
raptorddd said:
not all phone can be unlocked. h810 cant. so try getting one of these in this list.
tell them when you upgrade it doent work cause its all messed up. you want refund or a phone from the list.
https://forum.xda-developers.com/g4/general/unlock-list-lg-g4-variants-unlocked-t3262621
Click to expand...
Click to collapse
Did it. The discussion is on the way.
Opened the phone, the mainboard is labeled VS986.
So :
-Download mode claim H81010o
-Android show H815
-Mainboard is labeled VS986
So my phone is a VS986 (ie the mainboard). Is there a way to make it a VS986 for Android and Download Mode, like the mainboard was originally?
Megagolgoth said:
Opened the phone, the mainboard is labeled VS986.
So :
-Download mode claim H81010o
-Android show H815
-Mainboard is labeled VS986
So my phone is a VS986 (ie the mainboard). Is there a way to make it a VS986 for Android and Download Mode, like the mainboard was originally?
Click to expand...
Click to collapse
so its a verizon.. with thinkered software. you could try the KDZ for verizon.. but maybe it could mess the imei and baseband.. not so sure.. but you can try.. i would ask for refund..
raptorddd said:
so its a verizon.. with thinkered software. you could try the KDZ for verizon.. but maybe it could mess the imei and baseband.. not so sure.. but you can try.. i would ask for refund..
Click to expand...
Click to collapse
I tried the KDZ for Verizon (VS986). LGUP fail because the model reported is H815. I will try with "LG Flash Tool 2014".
Another solution could be writing directly the eMMC with eMMC DL Tool. I didn't find the VS986 bin file for now.
I successfully flashed the phone with "LG Flash Tool 2014".. It's now a VS986 (claimed by android) and as labeled on the motherboard.
Megagolgoth said:
I successfully flashed the phone with "LG Flash Tool 2014".. It's now a VS986 (claimed by android) and as labeled on the motherboard.
Click to expand...
Click to collapse
is all working .. too bad you wont have unlocked bootloader.
Yes, and :
LTE isn't working (verizon limitation)
Sticker labelled H815
What I've found out about my G4 Frankenphone so far:
- sealed box said LG G4 'dual LTE'
- sticker on phone under battery says H811 and has a valid corresponding IMEI
- phone model in settings/device info is H810 with IMEI 0! :crying:
- download mode screen is in Korean with some mention of F500L v11d...
- the phone came rooted running LP
- it is registered on my network, working 4G LTE!
I've been hoping to custom OS and reinstate a sensible IMEI but from everything I've read and not been able to do (can't flash anything and always coming across 'barriers') and to avoid bricking the phone, I am giving up. I have contacted the vendor and told him to find a replacement, clean G4 or clean G3. Seems to me that the G3 is a lot more versatile in terms of the support, especially here, for it. I shall miss the spec. of my G4 and it's greeeat camera!
- unless someone can convince me otherwise or point me to a G4 FrankenRom link and successful instructions!

Error Code: Secure boot 1002 - What should I do? Please help

Dear XDA community
I recently bought a LG G4 from an online retailer. According to their website they said it was a UK model, which according to the back of the phone beneath the battery it is: LGH815. But then after booting the phone the ROM being used was: LGH815T. Then I typed in the IMEI number and found out it was a: Verizon US model??
Basically I am having trouble identifying my model. The phone apparently came unlocked and rooted, but the person who sent it must have done something wrong because when I flashed a TWRP recovery image to the phone it comes up saying: secure boot error code: 1002.
The good thing is, is that I can boot into the device and still operate it as per usual. But what I want to do is bring the recovery back to normal. I was searching around and apparently there are some KDZ files that can be used just to flash the recovery? Is this correct? If so could you assist me in what I have to do to fix my issue which is: secure boot error 1002.
I would really appreciate any help regarding the matter. :crying:
Tried posting photos, but forum would not let me, all they showed was the model numbers.
Jesse
Higsley said:
Dear XDA community
I recently bought a LG G4 from an online retailer. According to their website they said it was a UK model, which according to the back of the phone beneath the battery it is: LGH815. But then after booting the phone the ROM being used was: LGH815T. Then I typed in the IMEI number and found out it was a: Verizon US model??
Basically I am having trouble identifying my model. The phone apparently came unlocked and rooted, but the person who sent it must have done something wrong because when I flashed a TWRP recovery image to the phone it comes up saying: secure boot error code: 1002.
The good thing is, is that I can boot into the device and still operate it as per usual. But what I want to do is bring the recovery back to normal. I was searching around and apparently there are some KDZ files that can be used just to flash the recovery? Is this correct? If so could you assist me in what I have to do to fix my issue which is: secure boot error 1002.
I would really appreciate any help regarding the matter. :crying:
Tried posting photos, but forum would not let me, all they showed was the model numbers.
Jesse
Click to expand...
Click to collapse
On the play store there is this https://play.google.com/store/apps/details?id=com.peamoon.phoneproductioninfo
This may help you I'd the device it it is a h815t you may not have the ability to unlock the boot loader......
Also try this *#546386#815#*.
This may also help.......
https://forum.xda-developers.com/tmobile-g4/help/twrp-installation-secure-boot-error-1003-t3168385
Use LGUP-NEW to install/flash ...
Higsley said:
Dear XDA community
I recently bought a LG G4 from an online retailer. According to their website they said it was a UK model, which according to the back of the phone beneath the battery it is: LGH815. But then after booting the phone the ROM being used was: LGH815T. Then I typed in the IMEI number and found out it was a: Verizon US model??
Basically I am having trouble identifying my model. The phone apparently came unlocked and rooted, but the person who sent it must have done something wrong because when I flashed a TWRP recovery image to the phone it comes up saying: secure boot error code: 1002.
The good thing is, is that I can boot into the device and still operate it as per usual. But what I want to do is bring the recovery back to normal. I was searching around and apparently there are some KDZ files that can be used just to flash the recovery? Is this correct? If so could you assist me in what I have to do to fix my issue which is: secure boot error 1002.
I would really appreciate any help regarding the matter. :crying:
Tried posting photos, but forum would not let me, all they showed was the model numbers.
Jesse
Click to expand...
Click to collapse
Use LGUP-NEW ( https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803 ) to install/flash ... the appropriate stock KDZ for your specific model once you ascertain it (LGUP - NEW may recognize your model and you can use that info to find the right KDZ). You will have to re-root the phone if you still wish to have root.
If you do root, suggest you might want to check out steadfasterX's [LOCKED][G4][TWRP][UNOFFICIAL] TWRP-in-FIsH for all locked G4 devices at: https://forum.xda-developers.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048
It has been tested on locked devices AND unlocked devices. Version 3 Beta 4 and 5 seem very stable and the links are available in the later posts on the site. It works like a charm and has been tested on a quite a number of devices now.
Addendum: I'm wondering if the online retailer may have meant it was carrier unlocked (i.e., so you could use other service provider's sim cards), not bootloader unlocked? That could account for the secure boot error getting TWRP to load.
S.
NB: Don't forget to click the Thanks button when members try to answer your questions and/or solve issues you have encountered.

Camera &calling app not working on my g4 (Help)

Hello,
I have a lg g4 815h bought from ebay India and using in India for a few months back...it was working fine till yesterday. A pop up was coming for a system update since 1 month so I decided to perform the update ...so I allowed the update but as soon the phone rebooted and the android sign came it showed error.
After 5 mins nothing happned so i restarted the device it booted but since then the camera is is not working says unfortunately camera has stopped ,even my phone call pick up screen is not showing when there is a call to answer...
I can call some one but cannot end the call due to no calling screen is appearing.
I did hard reset but the situation is same...
Should I flash using lg flash tool ?any version works on windows xp?I only have a windows xp Pc...
Or please provide a solution which can be performed using recovery like twrp...
Please help...
Thanks in advance
If any advices to flash my device using twrp please also suggest me a simple and stable rom
file...
Thanks
Kind Regards
one more problem I have Identified on my phone ,
I can see the hardware serial no shows LGLS991852e50ae which can be a sprint phone but the software installed shows that the phone's model is H815...
what to do...
please help
ur phone is REFURBISED?
karan5567 said:
one more problem I have Identified on my phone ,
I can see the hardware serial no shows LGLS991852e50ae which can be a sprint phone but the software installed shows that the phone's model is H815...
what to do...
please help
Click to expand...
Click to collapse
open phone . take out mother board .. and read plaque model. if sprint flash sprint KDZ and LGUP. if H815 then do that .. thats the only way to be sure.
U have a refurbished model.Go to nearest mobile repair shop & take out your motherboard to see what model no is written on this.Then flash a rom accoringly. Don't flash any other rom just by assuming else you will brick your device.
Yes my phone is refurbished...
But how to flash the rom?
If I found it to be a sprint version and flash a sprint rom ...it will be locked?I am using phone in India...
Any chance to root the phone and install twrp?
Then flash a custom rom?
Please help...
karan5567 said:
Yes my phone is refurbished...
But how to flash the rom?
If I found it to be a sprint version and flash a sprint rom ...it will be locked?I am using phone in India...
Click to expand...
Click to collapse
Most probably it will be locked cause most higher Android versions LG has blocked rooting or unlocking..But you can always browse few threads.
Mine is also a refurbished model with F500L motherboard,LS911 body & had H815 global rom installed out of the box.I am currently on F500L Nougat locked & unrooted..I have tried almost every method.It failed to root & even to enter fast boot.
If you get your proper model no on motherboard then just flash the rom with ToT flasher in download mode with respective DLL.
asingha94 said:
Most probably it will be locked cause most higher Android versions LG has blocked rooting or unlocking..But you can always browse few threads.
Mine is also a refurbished model with F500L motherboard,LS911 body & had H815 global rom installed out of the box.I am currently on F500L Nougat locked & unrooted..I have tried almost every method.It failed to root & even to enter fast boot.
If you get your proper model no on motherboard then just flash the rom with ToT flasher in download mode with respective DLL.
Click to expand...
Click to collapse
Thanks for your reply...
Your network is locked?
You cant unlock it?
Can we degrade our Os to lollipop to get root?
Even I cant turn on the Enable OEM unlock under the developer mode...
Any more advices?
Please help.....
I have tried almost all h815 ans ls991 roms with all flashing methods but still unable to successfully flash my device...lg tot flash tool always show dl error after 4 to 6 percent of flashing...
Please help
Any idea's?
Pick the phone, and send it to the place where you bought it. If you have warranty the repair is free, if not, then you must pay sadly.
Still no solution, I even cannot enable OEM unlock under developer options...
It automatically disables it...
Please help
Just experienced this issue after changing sim card... Call and Camera stopped working over and over again.
How I solved it: Go to the specific app that is causing you trouble, and clear cache/files (too bad I only found this after 3 factory resets).
Maybe it will help ... LG G4 CAM

Categories

Resources