Develop Bugs

H815T masked as H815?

Hello, posting for a friend.
I think my friend purchased an H815T as when he received the phone the box had H815T on it. The seller is not accepting return because the model number in the phone says H815. However, when trying to unlock the bootloader via LG, it says ARROW(SINGAPORE) and that a bootloader unlock is not available for that phone.
Is there anyway to prove this phone has been flashed with H815 firmware to mask its true model number? I can't find any field test mode information that would bypass the firmware and give him a real answer. And IMEI lookup only shows H815 and not H815T, although I'm not sure it would differentiate anyway.
All help greatly appreciated!

N12X93R said:
Hello, posting for a friend.
I think my friend purchased an H815T as when he received the phone the box had H815T on it. The seller is not accepting return because the model number in the phone says H815. However, when trying to unlock the bootloader via LG, it says ARROW(SINGAPORE) and that a bootloader unlock is not available for that phone.
Is there anyway to prove this phone has been flashed with H815 firmware to mask its true model number? I can't find any field test mode information that would bypass the firmware and give him a real answer. And IMEI lookup only shows H815 and not H815T, although I'm not sure it would differentiate anyway.
All help greatly appreciated!
Click to expand...
Click to collapse
Your model is H815. The model that available in Singapore is H815.
You can not unlock bootloader because LG unlocks only European H815 models

Most if not all g4 are coded h815. The regional difference comes after that will determine whether u can unlock or not and as my experience goes, the region code doesn't get specified on the g4 box. Unlike Samsung, lg doesn't distinguish different regions with different codes (like gt9300, gt9301 etc) , that how lg got me too. Shifty bastard. So u probably won't be able to get the seller to accept the return due to misleading description since it is indeed h815

LG G4 complicated issue

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

Anyone? Please help me!!!

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!

Need help..

Hi
I bought the used g4 two days back. In the about section its showing h815 model with android 5(lollipop).
I updated it to marshmellow using LgUp and lg firmware. But after upgrading sim is not working . I reverted back to lollipop and still sim not working.
After not finding any solution i went to the technician , he found the board inside is of h810(at&t) model. While the software is showing h815.
So anyone of you know how to solve this problem. Sim was working before perfectly.

ahsan64 said:
Hi
I bought the used g4 two days back. In the about section its showing h815 model with android 5(lollipop).
I updated it to marshmellow using LgUp and lg firmware. But after upgrading sim is not working . I reverted back to lollipop and still sim not working.
After not finding any solution i went to the technician , he found the board inside is of h810(at&t) model. While the software is showing h815.
So anyone of you know how to solve this problem. Sim was working before perfectly.
Click to expand...
Click to collapse
Maybe flash a h810 at&t ROM. Verify the actual model of the phone by removing the back cover and looking for h815 or h810. It's also possible you have a h810 motherboard in a h815 shell.

htr5 said:
Maybe flash a h810 at&t ROM. Verify the actual model of the phone by removing the back cover and looking for h815 or h810. It's also possible you have a h810 motherboard in a h815 shell.
Click to expand...
Click to collapse
On board h810 is written. But software showing h815 model. Any idea..?

I believe this is a dodgy repair. As htr5 suggested, I would try an H810 kdz.
I have skimmed over these issues a few times but taken no real notice as I just keep repairing mine through carrier insurance every time I get the bootloop.
Is your IMEI still showing *#06# if sim not recognised now?

SavageRobot said:
I believe this is a dodgy repair. As htr5 suggested, I would try an H810 kdz.
I have skimmed over these issues a few times but taken no real notice as I just keep repairing mine through carrier insurance every time I get the bootloop.
Is your IMEI still showing *#06# if sim not recognised now?
Click to expand...
Click to collapse
Yes imei is showing. As currently the phone is running h815 software. If i flash 810 kdz through flash tool , will it cause any problem or brick ..?

ahsan64 said:
Yes imei is showing. As currently the phone is running h815 software. If i flash 810 kdz through flash tool , will it cause any problem or brick ..?
Click to expand...
Click to collapse
Great idea from SavageRobot. Type your IMEI number into http://www.imeipro.info/check_lg.html and it should pull up your phone's model number

I have seen this issue a bunch specially here lately people piecing g4s together.
Flashing diffrent firms crossin.
Go off the imei. This is always real touchy. Cause of cross flashing and bricking. To completly verify. Check imei and pull back of case apart and look at any model nums on the motherboard

htr5 said:
Great idea from SavageRobot. Type your IMEI number into http://www.imeipro.info/check_lg.html and it should pull up your phone's model number
Click to expand...
Click to collapse
TheMadScientist420 said:
I have seen this issue a bunch specially here lately people piecing g4s together.
Flashing diffrent firms crossin.
Go off the imei. This is always real touchy. Cause of cross flashing and bricking. To completly verify. Check imei and pull back of case apart and look at any model nums on the motherboard
Click to expand...
Click to collapse
I checked the model with imei. Its showing h812(canada version).
Software h815, board h810 and imei showing h812.
Totally screwed..!! Lol..

ahsan64 said:
I checked the model with imei. Its showing h812(canada version).
Software h815, board h810 and imei showing h812.
Totally screwed..!! Lol..
Click to expand...
Click to collapse
A mutt

I have seen a few people with this problem. One such post suggests to take the phone apart and look at the motherboard. Whatever model is on the motherboard is the one to go with

SavageRobot said:
I have seen a few people with this problem. One such post suggests to take the phone apart and look at the motherboard. Whatever model is on the motherboard is the one to go with
Click to expand...
Click to collapse
Thanks..
one thing will phone brick if i used firmware.kdz of different model ..? Or it is safe ..?

ahsan64 said:
Thanks..
one thing will phone brick if i used firmware.kdz of different model ..? Or it is safe ..?
Click to expand...
Click to collapse
It could brick. Just depends on how and what ure flashing. My old g2 was a sprint varient with a tmobile setup on it. And when i try to restore with flashtool it would just fail and give me a cross dl error. Again real tou hy situation

How to check the correct model?

About in settings say H811
Back of the phone says H815
ADB shows F500K
IMEI shows F500S
I don't know how to get my motherboard version

disassemble your G4 and in the motherboard you'll see the right model.