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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!
I recently bought a used LG G4 H81510h but it was in tip-top condition (although I only got the handset, nothing else). I have question/complaint. The phone is running Android Version 5.1 Lollipop with the build number being LMY47D. I looked at the specifications of the phone online and found out that it is supposed to get Marshmallow as well. But whenever I go to the Software Update section in the settings menu, it states that my phone is up to date. The person who sold it to me also said that he didn't get any updates by the time he had it. My set is not rooted and doesn't have it's bootloader unlocked or anything. I really want to updgrade, can you help me out here? I've tried the LG Flash Tool 2014, LG Bridge and the LG Support Tool but nothing worked for me. Each had it's own problem. The .kdz file (20A) doesn't install. Please halp, I'm primarily asking because I can't unlock the bootloader either, the OEM Unlock option in the Developer Options doesn't work no matter how many times I try to enable it, it stays disabled.
I do contract work for a cellular dealer, and they've given me some demo units to set up as loaner units for client devices going out for service.
I've been able to disable and remove the Retail Mode application on most of the devices, but the G7 Thinq doesn't seem to allow it to be removed - it's effectively baked into the ROM (it can be stopped/disabled, but that doesn't allow for full access - each time the device is wiped it goes back into demo mode, something that's useless for a service loaner).
Since I'm in Canada I'm assuming that there's no bootloader unlock available so I'm stuck until this (hopefully) drops/releases? My knowledge in my time with devices leads me to understand that there's no way to remove an app that's baked in (although some Samsung devices have bloatware removal tools or ADB commands to help with this process, so I figured asking might be a long shot!)
Thanks in advance
sh0nuff said:
I do contract work for a cellular dealer, and they've given me some demo units to set up as loaner units for client devices going out for service.
I've been able to disable and remove the Retail Mode application on most of the devices, but the G7 Thinq doesn't seem to allow it to be removed - it's effectively baked into the ROM (it can be stopped/disabled, but that doesn't allow for full access - each time the device is wiped it goes back into demo mode, something that's useless for a service loaner).
Since I'm in Canada I'm assuming that there's no bootloader unlock available so I'm stuck until this (hopefully) drops/releases? My knowledge in my time with devices leads me to understand that there's no way to remove an app that's baked in (although some Samsung devices have bloatware removal tools or ADB commands to help with this process, so I figured asking might be a long shot!)
Thanks in advance
Click to expand...
Click to collapse
What model is the phone? Maybe you will be lucky to somehow have the European version.
I also have LG g7 LDU we can help each other I opened it it's LGM710N board inside so I flashed with Korean kdz so now my Wi-Fi not working & storage showing 32gb phone, can someone provide some help?
Muridkegns said:
I also have LG g7 LDU we can help each other I opened it it's LGM710N board inside so I flashed with Korean kdz so now my Wi-Fi not working & storage showing 32gb phone, can someone provide some help?
Click to expand...
Click to collapse
After flashing the KDz did the retail mode gone ?
Do the demo units have a active modem?
Maby it's disable to prevent them from being sold to customers.
U probably nead to flash correct kdz if its a real fully functional unit..
The demo mode is activated automatically so stores can wipe a unit fast when costomers try to tamper with demo units.
Help me please
STALKER18 said:
After flashing the KDz did the retail mode gone ?
Click to expand...
Click to collapse
yes i already turned off retail mode but after flashing its unstable & restarting itself also wifi not working & its showing 32gb storage instead 64gb. please someone help me.
Hi!
I have this G7 with the model LM-G710V with an unlocked bootloader and managed to successfully flash Phh-Treble by following this thread:
https://forum.xda-developers.com/lg-g7-thinq/development/rom-phh-aosp-8-1-t3808649 :victory:
but then i would like to convert back to stock but unfortunately there are no available KDZ for G710V in the interweb.
would it be possible to convert G710V to G710EM ,or to a similar effect, by flashing 10b Vendor img and boot img then the kdz found in this thread:
https://forum.xda-developers.com/lg-g7-thinq/development/dump-g7-stock-vendor-t3840834 ?
or would this just leave me with a dead bricked phone?
additional notes:
bought this phone as a secondhand from someone in facebook with the bootloader unlocked and with, as the seller stated, "G7+" rom with issues.
no backup was made before
Thank you for anyone willing to answer! :good::fingers-crossed:
Pics for reference
https://i.imgur.com/xSnRnL1.jpg
https://i.imgur.com/PebWDAM.jpg
Hello @xElouise, according to the LG Open Source Code Distribution website (here), the G710V is equivalent to:
G710VM
G710AWM
G710AWMH
G710VMP
G710VMX
KDZs from any of the models above should work fine, just note that they may come with carrier bloatware. Reflashing the stock firmware is the same as any other G7 version (here, up to the first half step 5).
Does your phone have an IMEI code and working telephony? Because from the info I have gathered on the internet, looks like the G710V is a retail demo unit without either baseband or IMEI.
Hey there! Thanks for the reply!
Unfortunately since after flashing Phh-Treble LGUP does not recognize the phone anymore (Shows up as Unknown)(maybe because i flashed the vendor img(?) idk.)
Anyway, since back then before flashing Phh-Treble i was already trying to flash KDZs Thru LGUP, but unfortunately LGUP throws me error saying it does not support cross flashing.
I have tested the following before:
G710VM - LGUP Error cant cross flash G710V to G710VM
G710AWM - LGUP Error cant cross flash G710V to G710
G710VMX - LGUP Error cant cross flash G710V to G710
This unit IMEI & Baseband says unknown. This also has the white sticker at the back with some of it's details like unit model, FCC Id, etc.
xElouise said:
Hey there! Thanks for the reply!
Unfortunately since after flashing Phh-Treble LGUP does not recognize the phone anymore (Shows up as Unknown)(maybe because i flashed the vendor img(?) idk.)
Anyway, since back then before flashing Phh-Treble i was already trying to flash KDZs Thru LGUP, but unfortunately LGUP throws me error saying it does not support cross flashing.
I have tested the following before:
G710VM - LGUP Error cant cross flash G710V to G710VM
G710AWM - LGUP Error cant cross flash G710V to G710
G710VMX - LGUP Error cant cross flash G710V to G710
This unit IMEI & Baseband says unknown. This also has the white sticker at the back with some of it's details like unit model, FCC Id, etc.
Click to expand...
Click to collapse
Try hooking it up to LG bridge. It will automatically recognize the phone in download mode and it will update it to the latest stock.
LameMonster82 said:
Try hooking it up to LG bridge. It will automatically recognize the phone in download mode and it will update it to the latest stock.
Click to expand...
Click to collapse
LG Bridge fails to recognize the phone on download mode.
It says " Notice: Can not connect. disconnect the USB cable from your computer and reconnect" done this multiple times, even swapped usb cables with other phone
edit: So i was able to make LGUP recognize the device again but still same problem with cross flashing <see pic for reference>
https://imgur.com/JZrllUp
xElouise said:
LG Bridge fails to recognize the phone on download mode.
It says " Notice: Can not connect. disconnect the USB cable from your computer and reconnect" done this multiple times, even swapped usb cables with other phone
edit: So i was able to make LGUP recognize the device again but still same problem with cross flashing <see pic for reference>
https://imgur.com/JZrllUp
Click to expand...
Click to collapse
You can contact the guy that sold the phone to you and see if he has a dump. Otherwise I can pack the system and the vendor but I'm not 100% sure if it will work
Hi, is your unit the demo unit one, without phone function and with retail mode app? Did you encounter any issues with the flashed ROM so you're changing again? I managed to land one of those demo units but there's too much restriction for usage so I was thinking of flashing another ROM but I'm a complete noob with regards to that.
Thanks.
xElouise said:
Hi!
I have this G7 with the model LM-G710V with an unlocked bootloader and managed to successfully flash Phh-Treble by following this thread:
https://forum.xda-developers.com/lg-g7-thinq/development/rom-phh-aosp-8-1-t3808649 :victory:
but then i would like to convert back to stock but unfortunately there are no available KDZ for G710V in the interweb.
would it be possible to convert G710V to G710EM ,or to a similar effect, by flashing 10b Vendor img and boot img then the kdz found in this thread:
https://forum.xda-developers.com/lg-g7-thinq/development/dump-g7-stock-vendor-t3840834 ?
or would this just leave me with a dead bricked phone?
additional notes:
bought this phone as a secondhand from someone in facebook with the bootloader unlocked and with, as the seller stated, "G7+" rom with issues.
no backup was made before
Thank you for anyone willing to answer! :good::fingers-crossed:
Pics for reference
https://i.imgur.com/xSnRnL1.jpg
https://i.imgur.com/PebWDAM.jpg
Click to expand...
Click to collapse
@LameMonster82 , The seller said that he bought it off someone when it has boot loop issues and have his buddy fix it for him & he does not have any backup (guess that makes me a third hand(?) not really affected by it since i got the unit for a dirt cheap price around <$100 and it's quite a smooth unit too).
If you could, in your spare time of course, make the pack that would be really much appreciated! Thank you very much!
@ceezae , This may be a demo unit since i got it without any sim functions and a blank IMEI. I don't know about retail mode, though there was an widget applet before which showcases LG G7's features. I already bought the unit with it's boot loader already unlocked so I have no idea how a G710V got unlocked. When i bought the unit it does not have any audio at all either thru the headphone or speaker that's why i flashed a custom rom.
Anyway , since I flashed Phh-Treble 8.1 the phone's working smoothly aside from the aforementioned bugs in this thread
I am going back to stock since i can not utilize the quad DAC feature in custom rom and I could not get Gcam to work (it either crash or extremely Laggy)
I would also like to mention that:
I can not seem to boot to recovery via (Vol down + Power button) it always say that "Factory Reset is Disabled by Kill Switch" even though OEM Unlock is ticked in the developer settings as well as unsynced Google Account.
And my internal storage is showing that I only have 16 GB of internal (would be easy to fix with TWRP but again no luck with custom recovery)
xElouise said:
Hi!
I have this G7 with the model LM-G710V with an unlocked bootloader and managed to successfully flash Phh-Treble by following this thread:
https://forum.xda-developers.com/lg-g7-thinq/development/rom-phh-aosp-8-1-t3808649 :victory:
but then i would like to convert back to stock but unfortunately there are no available KDZ for G710V in the interweb.
would it be possible to convert G710V to G710EM ,or to a similar effect, by flashing 10b Vendor img and boot img then the kdz found in this thread:
https://forum.xda-developers.com/lg-g7-thinq/development/dump-g7-stock-vendor-t3840834 ?
or would this just leave me with a dead bricked phone?
additional notes:
bought this phone as a secondhand from someone in facebook with the bootloader unlocked and with, as the seller stated, "G7+" rom with issues.
no backup was made before
Thank you for anyone willing to answer! :good::fingers-crossed:
Pics for reference
https://i.imgur.com/xSnRnL1.jpg
https://i.imgur.com/PebWDAM.jpg
Click to expand...
Click to collapse
Hello! Publish the partition backup of G710V
I need it thank you
Can be backed up with the following adb command
adb shell dd if=/dev/block/bootdevice/by-name/abl_a of=/sdcard/abl_a.img
adb shell dd if=/dev/block/bootdevice/by-name/ftm of=/sdcard/ftm.img
[email protected] said:
Hello! Publish the partition backup of G710V
I need it thank you
Can be backed up with the following adb command
adb shell dd if=/dev/block/bootdevice/by-name/abl_a of=/sdcard/abl_a.img
adb shell dd if=/dev/block/bootdevice/by-name/ftm of=/sdcard/ftm.img
Click to expand...
Click to collapse
Hi there!
I am terribly sorry but my device is kinda a bit soft bricked(?) at the moment.
I was trying to flash the Stock Korean PIE KDZ and was successful but it had problems like WIFI can not be turned on and Random Reboots.
I think I also have lost access to Fastboot since the phone only Reboots itself normally.
My dumb self did not make a backup so I am a bit screwed at the moment.
Someone with an intact phone (which hasn't been flashed) will have to pack up their partitions and post it here. The G710V seems to be technically similar to the G710N but can't actually be flashed to a G710N (you can force this through using LGUP but it results in a phone that crashes all the time due to some issue with the wifi driver).
[email protected] said:
Hello! Publish the partition backup of G710V
I need it thank you
Can be backed up with the following adb command
adb shell dd if=/dev/block/bootdevice/by-name/abl_a of=/sdcard/abl_a.img
adb shell dd if=/dev/block/bootdevice/by-name/ftm of=/sdcard/ftm.img
Click to expand...
Click to collapse
Hey, I tried backing up these via adb shell myself on my G10V but... "permission denied". Great. Probably because the demo units force a Retail Mode device administrator that you can't remove at all. Can't even access the page itself in Settings ("you are not authorized..." blah blah). It's a shame, because I was really looking forward to helping OP.
have you succeeded I have the same problem as you
xElouise said:
Hi there!
I am terribly sorry but my device is kinda a bit soft bricked(?) at the moment.
I was trying to flash the Stock Korean PIE KDZ and was successful but it had problems like WIFI can not be turned on and Random Reboots.
I think I also have lost access to Fastboot since the phone only Reboots itself normally.
My dumb self did not make a backup so I am a bit screwed at the moment.
Click to expand...
Click to collapse
have you succeeded I have the same problem as you (I have the same thing as you me I have the retail mode app) and i also have the widget that introduces the lg g7 thinq i have to do what to remove the retail mode because i would like to use it as a phone to go on the internet etc and i also have the restrictions in the paremetre for the tab securiter
ok i also need to go back stock rom, is this possible? need g710v rom if anyone have
Lg g7 demo Lmg710v backup need
spacespeed01 said:
Someone with an intact phone (which hasn't been flashed) will have to pack up their partitions and post it here. The G710V seems to be technically similar to the G710N but can't actually be flashed to a G710N (you can force this through using LGUP but it results in a phone that crashes all the time due to some issue with the wifi driver).
Click to expand...
Click to collapse
I also need backup of LMG710V please anyone give backup (dont flash any firmware in g7 demo)
I tried All g7 firmwares flash in g7 demo unit
Lmg710n
Lmg710vm
Lmg710awm
Lmg710em
Lmg710em full modem files with octoplus..
Lmg710N qcn
I all tried but nothing work
Same problem
Wifi, storage, fasboot, restarting, auto fectory reset,
Problem still in all lg g7 firmwares
Ithink g7 demo unit have some hardware changes
G7 demo Wifi only has 2.4ghz wifi not 5ghz
Anyone want try fix problem
1.Flash LMGG710N firmware global version
2.write LMG710N QCN
3.fectory reset
Possible its works for
LMG710N qcn attached link
https://drive.google.com/file/d/1TWTtqOkzdR9FjHeghTF4CZHevwPqSmVG/view?usp=drivesdk
[email protected] said:
Hello! Publish the partition backup of G710V
I need it thank you
Can be backed up with the following adb command
adb shell dd if=/dev/block/bootdevice/by-name/abl_a of=/sdcard/abl_a.img
adb shell dd if=/dev/block/bootdevice/by-name/ftm of=/sdcard/ftm.img
Click to expand...
Click to collapse
no way to pull whith adb two files
check image
Did op found the firmware??
Does anyone have g710v firmware or backup???Appreciate !!
Gebozen said:
Does anyone have g710v firmware or backup???Appreciate !!
Click to expand...
Click to collapse
Is this for a Verizon G710VM?
i know, old thread.... but is there still no stock retail demo firmware dump anywhere?
paparansen said:
i know, old thread.... but is there still no stock retail demo firmware dump anywhere?
Click to expand...
Click to collapse
I have a dump. I did it using the EFM program from the Z3X team.
If you want to try to restore, write to the telegram.
I got a G8 from eBay and I'm stuck on on Android 9 October 1, 2019.
The model says sprint in settings but the IMEI tells me it's Amazon unlocked (even do i have the google asistan button )
Lg bridge only detects the phone in download mode but it fails once the update starts
tried flashing the amazon g8 kdz manually Got this
I saw a way to update the sprint models on Xda but I'm not sure because of the IMEI,
it also has Amazon apps pre installed and some sprint apps
Any help
TheOgGirrafe said:
I got a G8 from eBay and I'm stuck on on Android 9 October 1, 2019.
The model says sprint in settings but the IMEI tells me it's Amazon unlocked (even do i have the google asistan button )
Lg bridge only detects the phone in download mode but it fails once the update starts
tried flashing the amazon g8 kdz manually Got this
I saw a way to update the sprint models on Xda but I'm not sure because of the IMEI,
it also has Amazon apps pre installed and some sprint apps
Any help
Click to expand...
Click to collapse
Were you able to solve this?