Found my sisters old LG G4 (H812) and looking to re-purpose it, but idk - G4 Q&A, Help & Troubleshooting

Hey XDA,
I found my sisters old LG G4 (H812) that I bought her several years ago, she is running a LG G6 now so the G4 has been stuck in a drawer for awhile. It powers up but has a small issue. Before she upgraded the LG G4 bootlooped, i sent it into LG Canada and they replaced the Mainboard. Hasn't bootlooped since but it has an issue of uninstalling apps by itself. Like the icons become green Android icons and it shows the app does not exist. Is this issue fixable? Is it a hardware issue? I don't wanna go rooting the phone to have it still auto remove apps until it removes a system app that causes it to brick. So idk what to do with it? Suggestion?

EternalSeekerX said:
Hey XDA,
I found my sisters old LG G4 (H812) that I bought her several years ago, she is running a LG G6 now so the G4 has been stuck in a drawer for awhile. It powers up but has a small issue. Before she upgraded the LG G4 bootlooped, i sent it into LG Canada and they replaced the Mainboard. Hasn't bootlooped since but it has an issue of uninstalling apps by itself. Like the icons become green Android icons and it shows the app does not exist. Is this issue fixable? Is it a hardware issue? I don't wanna go rooting the phone to have it still auto remove apps until it removes a system app that causes it to brick. So idk what to do with it? Suggestion?
Click to expand...
Click to collapse
3 things you can try.
1). Do a factory reset if your'e on a stock rom (MM?):
2). Download a stock kdz for your rom (LG Fan Club) and flash with LGUP-NEW or use LG Bridge
3). Get with the program and unofficially unlock your bootloader with steadfasterX's brilliant work in this thread: [UNLOCK][UNOFFICIAL][G4] Unlock **ANY** LG G4 device with UsU (read everything very carefully and make sure you understand it fully) and update the phone to LineageOS Oreo or Pie with the latest Google security updates (staying on stock MM you will be a few years out-of-date in your security updates). You can choose any version of Open Gapps to install the Google apps you want. You do not have to root your phone if you do not choose to.
S.

Related

LGSmartCover and Mirrorlink stopped working after LMY47D update

LGSmartCover and Mirrorlink stopped working after LMY47D update via Lg Bridge on a rooted device which had twrp before updating. I had updated via lg bridge before without any problems. I've seen some people with the same problem in this tread http://forum.xda-developers.com/g4/general/lg-g4-h815-internacional-v10c-firmware-t3172621/post62228220#post62228220
but no solution it seems. I tried clearing the data of these apps but it didn't work. any body managed to solve it?
Had to restore but problem is solved now
jan-sgs said:
LGSmartCover and Mirrorlink stopped working after LMY47D update via Lg Bridge on a rooted device which had twrp before updating. I had updated via lg bridge before without any problems. I've seen some people with the same problem in this tread http://forum.xda-developers.com/g4/general/lg-g4-h815-internacional-v10c-firmware-t3172621/post62228220#post62228220
but no solution it seems. I tried clearing the data of these apps but it didn't work. any body managed to solve it?
Click to expand...
Click to collapse
Hi to everybody
i write from French
i have lg g4 H815 ( europe model)
and the same problem with mirrorlink and apps quick circle
after the upgrade sw to v10C with lg bridge with windows 10
i tried everything, hard reset, factory reset
normal flash with lg flash tool to versio v10b
but nothing, the problem remains
bad problem 'cause everytime i start my g4 i see two times the message:
"mirrorlink stop working"
so 10 minutes to find gps for google maps
and everytime around ten icons disappears from the screen
for now, i can't make work lg support tool for an CSE flash
to go back to version v10b
lg support tool stop working after install drivers and connect my g4
i see @jan-sgs have solved the problem
You or somebody can tell me how to solve this bad problem?
sorry for the long post, just want to be precise
many thanks
Hi-)
Hi and sorry for 2 consecutive posts
Well this mirrorlink problem is very bad
Somebody have some solutions please?
My g4 h815 works bad with this problem
I see is out 2 new firmware version for g4, v10E and v10g
Only for saudi Arabia (Erirati arabi)
It' compatible with europe g4 version?
Hello same problem with mirrorlink since the v10d update for h815 international yesterday ?
Solved, go back to v10b
jellysteve said:
Hello same problem with mirrorlink since the v10d update for h815 international yesterday ��
Click to expand...
Click to collapse
Hello
I've problem with login, don't know why
No way to login, sorry for 2 registrations
I'm Ken7stars
@jellysteve
I've solved my mirrorlink problem like this
I have G4 europe H815, brand vodafone
Search in this site kdz vodafon file
There's very few files kdz vodafone, not found for italy
I find in this link posted by a great guy here
Don't know if i can post the link, i have few posts
I can't, anyway, it's the list of kdz files here on the 3d "go back to stock G4"
I've download "portugal vodafone v10b"
It'real 10b, not 10c as some called 10b
Normal flash with lg support tool
And the vodafone 10b was in my g4
Automatically i find OTA update for v10c, 330mb
After the update with ota
The problem mirror link it's solved
So, you have mirror link problem after kdz file v10d?
Or problem after OTA update v10d?
Hope i can help-)
Hi-)
Hello the mirrorlink issue is since OTA update
I found a kdz on the lg phone firmware website but the link for download doesn't work any idea ?
http://pkg03.lime.gdms.lge.com/dn/downloader.dev?fileKey=FWB404P1321JAW64108DNML/H81510D_00.kdz
Thanks
jellysteve said:
Hello the mirrorlink issue is since OTA update
I found a kdz on the lg phone firmware website but the link for download doesn't work any idea ?
Thanks
Click to expand...
Click to collapse
Hello
The link doesn't work even for me
So mirrorlink on g4 it's not easy to solve
You have international g4, so model H815?
I can't post links for now
I can't say this is the solution for you
But i solved mirrorlink in this way
Go here in the Forum at the section for G4:
G4 General- [Guide] LG G4 Stock Firmware (Go Back to Stock) KDZ & TOT Method by hyelton
In the middle of the post there's:" KDZ Firmware Files; HERE"
Click HERE
A link will open with some kdz files for G4
Download kdz before v10d
Important, your g4 is brand or no brand?
You have choose the right kdz for your G4
If you have H815 europe, try d.load these kdz file:
Europe General H81510B_00.kdz 1697378KB Jul 06 2015 04:43:29 PM
Or kdz files of your provider, if there's in list
As most of v10b kdz, it's not v10b, but v10c
Good for you 'cause you have v10d
Run lg flash tool 2014
Put kdz file
Select CSE flash
Leave all the others fields as they are
If Cse flash don't work, do normal flash
At the restart, you'll find v10c
And 99% find the Ota update for v10d
Before the Ota update do a hard reset
At the restart, run the Ota update v10d
And see if mirrorlink works
If not, with lg bridge run "fix update error"
Don't do with lg bridge the software update, this will put mirrorlink error
If you have windows 10, maybe Cse flash will not work
No prob, normal flash work back to v10b-c
Hope will work
Sorry for the long post-)
Yes I comfirm my g4 is h815 unbrand.
I found the kdz v10d for France it's my actual version.
I'm ok with the process : lg flash tool.. question if I use normal flash it's necessary to make hard reset or not.
Thanks for your help and time ?
Envoyé de mon LG-H815 en utilisant Tapatalk
jellysteve said:
Yes I comfirm my g4 is h815 unbrand.
I found the kdz v10d for France it's my actual version.
I'm ok with the process : lg flash tool.. question if I use normal flash it's necessary to make hard reset or not.
Thanks for your help and time
Envoyé de mon LG-H815 en utilisant Tapatalk
Click to expand...
Click to collapse
The point is to go in downgrade, v10b or C
If you keep kdz file v10d, i think the problem remains
Your G4 is no brand, so in the link if kdz files try d.load the file kdz i've posted above
With flash tool try normal flash
So you have v10c, then accept the Ota v10d
And see if mirrorlink is solved
If not, do hard reset
Then with Lg bridge do fix errors update
I'm italian but i live in France like You
In this time is almost impossible download flash tool and drivers
Many french sites in these days have put in web around 50 virus
Keep update-)
Hello
I found V10C and I downgrade my g4 with flashtool and I make the update with lg bridge and same problem with mirrorlink
I make a hard reset and same problem I don't understand
I think i wait a new update for solve perhaps the problem.
Evaluate the problem
jellysteve said:
Hello
I found V10C and I downgrade my g4 with flashtool and I make the update with lg bridge and same problem with mirrorlink
I make a hard reset and same problem I don't understand
I think i wait a new update for solve perhaps the problem.
Click to expand...
Click to collapse
Well mirrorlink is hard to solve
I've done the steps to solve m.link by my idea
Can't found nothing on web
I don't know if you have patience to make again all the steps
You said you update with Lg bridge after downgrade v10c
Only my opinion, this is the mistake while I'd m.link problem
I said in my previous post:"don't do with lg bridge the software update, this will put mirrorlink error"
If you want to retry
Downgrade v10c, wirh cse flash, then wait the OTA update, not update with lg bridge
The best way is downgrade v10b, like i did for vodafone
But v10b no brand kdz is hard to find
It depends what problems create m.link at your g4
If it's only the message at start, it's not bad problem
In my case, many icons of app on screen disappears
I hope is not your case
Just value the problem, only a message, it's not so bad
As you said, with a new update the problem should be solved
Hi-)
It's my guess, but i think mirrorlink problem will persist for those, who has unlocked bootloader and ignored LG warning that some apps, based on DRM will stop working
nixuspix said:
It's my guess, but i think mirrorlink problem will persist for those, who has unlocked bootloader and ignored LG warning that some apps, based on DRM will stop working
Click to expand...
Click to collapse
I totally agree
I'd unlocked my vodafone bootloader
And so here mirrorlink problem
It's strange that i've solved with downgrade and Ota update, but not @jellysteve case
Mirrorlink is useful if you have a modern car that fit with
If like me, i have a modern car not compatible
The error message m.link can be ignored
I must fix 'cause many icons of apps disappeared at start
But it seems icons problem, happened only for my G4!
Then, with windows 10 i can't do cse flash
So i go back to Win 7, and cse flash works
Hi-)
I started to face this problem, but my H815 fully stock, no unlocking, no rooting. And I wish it to stay that way for now... So the only solution for me is wait for LG to fix that?
Weird thing, I uninstalled quick circle apps, quick remote and quickify, and the problem seems to be gone
maslelviz said:
Weird thing, I uninstalled quick circle apps, quick remote and quickify, and the problem seems to be gone
Click to expand...
Click to collapse
Is your bootloader unlocked and are you rooted?
nixuspix said:
Is your bootloader unlocked and are you rooted?
Click to expand...
Click to collapse
no, I'm not rooted, bootloader locked. I started having this issue when I started experimenting with various apps for quick circle case.
Hello, maybe my solution will help for you too. Ive got h815, locked bootloader with low effort root.
Ive installed super manager app with root permissions. In the app go for the system folder, when you trying to enter switch system folder to r/w (the app automaticly asks it). Go to the priv-app search LgCover folder and rename the app inside of it with .bak extension. Reboot the phone.
After that repeat the process but you should remove .bak from the end of the app's name (back to the original) and reboot again. Mine started to work without any issues. I guess that will work with the mirrorlink app. Location of the app: system/app/MirrorLinkServer folder. You should do the same thing with it
Good luck

H815P Root Method?

Hi guys,
I recently got my LG G4 replaced as there was a software issue on my old one (which was rooted, Android 5.1), and the replacement model has been upgraded to Android Marshmallow. It's an H815P model (as was my old one, I think I used LG UP to root it, as there is no unlocked bootloader for it). I'm not really sure how to root my current phone, and was hoping I could get some guidance? Sorry if it's been asked before, I'm not the most well versed with rooting.
Find the appropriate LP KDZ file for your phone and then use LGUP and downgrade back to LP.
I did that late last year sometime.
Sent from my p4 using XDA-Developers mobile app

LG G3 d851 Not getting 6.0 update (Marshmallow)

Hello people, I bought my LG G3 d851 in December, 2015
And my brother recently got it like 2 or 1 month ago and he has marshmallow, I'm still on kit Kat I tried to go the update center on my phone in settings and it says it's up to date. My brother's phone is the exact same. Both made in Korea I checked the emei it's real, I used LG pc suite it still says up to date. I tried other apps off the play store, nothing now, keep in mind that I have root access so can anyone please help me fix this?
Thanks
-Owen
SOLVED
SOLVED

Lg gpad x 10.1" v930 at&t firmware

Where can i find any Firmware for this Tablet.
Tablet stuck on bootloop.
Any version would be great
Thank you
No V930 firmware has been distributed, to my knowledge. But another user reported successfully using the V935 firmware -- that's the European version:
https://forum.xda-developers.com/g-pad-10/help/g-pad-ii-lte-v935-kdz-compatible-t3359878
Currently available to download here:
https://lg-firmwares.com/lg-v935-firmwares/
I wonder what broke if anything and what the benefits would be other than getting rid of the AT&T bloatware.. I'd love to get rid of the bloatware and mine is carrier unlocked so maybe I should just go for this and see what happens. I don't even use it with a sim card, I just use it on wifi... decisions, decisions...
all this rom for v935 not working on v930 gpad
all this rom for v935 not working on v930 gpad i tried all
jvianney94 said:
I wonder what broke if anything and what the benefits would be other than getting rid of the AT&T bloatware.. I'd love to get rid of the bloatware and mine is carrier unlocked so maybe I should just go for this and see what happens. I don't even use it with a sim card, I just use it on wifi... decisions, decisions...
Click to expand...
Click to collapse
Having used the V935 stock image to recover a fouled V930, the main things I notice that are broken using a V935 stock image are that the rear-facing camera doesn't work (since it's different between the two models), the size of the system files is misreported such that it significantly reduces your available storage (since the V935 has 16GB and the V930 has 32GB, I'm guessing), and the gyroscope seems to not work.
Have seen some kludgy fixes for the system file size issue, and one can always throw in a micro SD card for more storage. If you just need it for browsing the web, reading books, video chat, etc. the front camera works fine, and there are a few apps out there that will allow you to manually rotate the screen. For me, though, the lack of a rear camera and gyroscope really limit my use of this, since I use a few AR apps, and this renders the tablet useless for them. So -- unless there are patches for these issues somewhere that I'm missing -- if a V930 stock .kdz DOES show up, bloatware or no bloatware, I will be all over that.
could you help me to fix my taplet
i flash by lg LG Flash Tool 2014 and i put kdz v935 after that my taplet not open the android only stuck on lg logo
ahzi said:
i flash by lg LG Flash Tool 2014 and i put kdz v935 after that my taplet not open the android only stuck on lg logo
Click to expand...
Click to collapse
The first time I flashed it, it did that. It turned out to be a bad USB cable. Flashed it again with a different cable, and it worked.
If you're following the instructions for using Flash Tool 2014 step-by-step by-the-numbers, have tried a different cable to re-flash it, and it's still doing that, then I don't know what to tell you. Maybe re-download the KDZ in case the first download attempt was corrupted somehow?
Sorry to not be much help!
Whyaylooh said:
... if a V930 stock .kdz DOES show up, bloatware or no bloatware, I will be all over that.
Click to expand...
Click to collapse
A year later, and I'm left presuming that's very unlikely.
chimpchampion said:
A year later, and I'm left presuming that's very unlikely.
Click to expand...
Click to collapse
Same.
ahzi said:
all this rom for v935 not working on v930 gpad
all this rom for v935 not working on v930 gpad i tried all
Click to expand...
Click to collapse
thanks for the update on the status of them NOT working on the v930
im still on the hunt for a way to unlock bootloader get twrp and magisk on it, i know it usses a sd800 maybe some other devices that use the same processor can use the same twrp or gain root
if anyone comes across the prog_emmc_firehose_8974_lge
let a developer know asap
Can someone who is experienced in this android areana check to see if any of these roms at this LG website will work with the LG V930 G-Pad, thank you in advance.
How to Download Firmware for LG V930 G Pad X 10.1?, how to - HardReset.info
www.hardreset.info

LG G3 D855 root problem

Hello!
I've got a little or maybe a big problem with rooting my LG G3. For now i've got android 6.0 Marshallow installed.
I spent on this whole day and I think i tried every possible way.
I tried stump root(i guess it only works for kitkat) , purpledrake root, kingroot..
Moreover I tried to downgrade to android 5.0 but my device is "unknown" for LG UP. Also, I tried LG Lash tool but it returned an error too.
Do you guys know any other way to root this device? Thanks in advance ;c
I got the same problem.
Hi! Sorry that I'm responding so late. I found that i had the problem with downgrading becouse of wrong LGUP zip.
I found correct one here https://www.youtube.com/watch?v=81kb6fqHxUo&list=LLF_c9VT9RRrxMaH_s9qwFWQ&index=1&t=283s in video description.
Now with LP installed root should be possible.

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