lg g4 us991 bootloop - G4 Q&A, Help & Troubleshooting

Hello guys im wondering if there is a tot file to disable the two big cores on this model it have bootloop problem. The lastest revision dont support this model and either the vs986 from verizon. I know that in the at&t can be flashed to h815p from claro and then apply the tot, there is any way to do this maybe do the same thing that y do with with the h810, or something similar. I have repared lot of g4 with this issue.

riper2510 said:
Hello guys im wondering if there is a tot file to disable the two big cores on this model it have bootloop problem. The lastest revision dont support this model and either the vs986 from verizon. I know that in the at&t can be flashed to h815p from claro and then apply the tot, there is any way to do this maybe do the same thing that y do with with the h810, or something similar. I have repared lot of g4 with this issue.
Click to expand...
Click to collapse
If you have lollipop installed and rooted your device you could install TWRP and disable them from here instead.
But this requires that you have installed TWRP in FIsH before so it doesn't work when your device bootloops already
.
Sent from my LG-H815 using XDA Labs

steadfasterX said:
If you have lollipop installed and rooted your device you could install TWRP and disable them from here instead.
But this requires that you have installed TWRP in FIsH before so it doesn't work when your device bootloops already
.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Is posible to install trwp with a locked bootloader? I never tried. I have a h815 but withloacked bootloader rooted wtih lollipop y have installed xposed and with flashfy installed the genesis rom 2.2 with stock kernel. With locked bootloader i cant do much.

steadfasterX said:
If you have lollipop installed and rooted your device you could install TWRP and disable them from here instead.
But this requires that you have installed TWRP in FIsH before so it doesn't work when your device bootloops already
.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Yeah you have right with that it donĀ“t have trwp installed

riper2510 said:
Is posible to install trwp with a locked bootloader? I never tried. I have a h815 but withloacked bootloader rooted wtih lollipop y have installed xposed and with flashfy installed the genesis rom 2.2 with stock kernel. With locked bootloader i cant do much.
Click to expand...
Click to collapse
Just check my signature. I have developed a way to boot into twrp for locked devices..
.
Sent from my LG-H815 using XDA Labs

Related

Bootloader Question

Hi guys just after some info. What is the difference between rooting and unlocking the bootloader on the LG G3.
Also do you have to have the bootloader unlocked to install the various stock roms kicking about on the forum , if not why not.
Thanks for the information just after understanding how this stuff works. Many thanks
Rooting basically let's you modify the system files anyway you want where as the boot loader is there to stop the loading of custom ROMs essentially as long as you rooted and bumped the device flashing twrp you can flash any custom rom but I think you need the kk bootloader not the new lollipop one
Sent from my LG-D855 using XDA Free mobile app
Neurom707 said:
Rooting basically let's you modify the system files anyway you want where as the boot loader is there to stop the loading of custom ROMs essentially as long as you rooted and bumped the device flashing twrp you can flash any custom rom but I think you need the kk bootloader not the new lollipop one
Sent from my LG-D855 using XDA Free mobile app
Click to expand...
Click to collapse
Thanks mate
Sent from my LG-D855 using XDA Free mobile app
Is there any pratical difference between kk bootloader and new lollipop one ?
JoaoVr said:
Is there any pratical difference between kk bootloader and new lollipop one ?
Click to expand...
Click to collapse
Yes. The Lollipop aboot is going to break the current "Bump!" method of getting custom ROMs on. However, the devs will likely bypass that, just don't take an OTA before it's cleared on here (likely won't be).
JoaoVr said:
Is there any pratical difference between kk bootloader and new lollipop one ?
Click to expand...
Click to collapse
Yes. the lollipop one is more picky about what ROMs it will start, and I believe it has the Bump exploit fixed.

Root h815 version

What's the best and easier way to root the h815 version while on MM and without the bootloader unlocked?
Thanks!
None
Sent from my H815 using Tapatalk
ObiDanKenobi said:
None
Sent from my H815 using Tapatalk
Click to expand...
Click to collapse
Thanks xD
Sent from my LG-H815 using XDA-Developers mobile app
If you want root and keep you bootloader locked you have to downgrade to lollipop
Sent from my H815 using Tapatalk
ObiDanKenobi said:
If you want root and keep you bootloader locked you have to downgrade to lollipop
Sent from my H815 using Tapatalk
Click to expand...
Click to collapse
may i ask you why? it cant be. i remeber reading about MM not letting you change system? is it cause of that.?
will there be a way to root it.? yes no maybe ?
If im on lollipop rooted and my device get suffer from bootloop lg at service can see if i was rooted and void my warranty?thx
johnnyman25 said:
If im on lollipop rooted and my device get suffer from bootloop lg at service can see if i was rooted and void my warranty?thx
Click to expand...
Click to collapse
If am not mistaken.. yes theyll know.. because you used your imei to get bootloader .bin.. from LG
johnnyman25 said:
If im on lollipop rooted and my device get suffer from bootloop lg at service can see if i was rooted and void my warranty?thx
Click to expand...
Click to collapse
If you are on lollipop and you rooted without unlocking the bootloader, you can unroot by writing a kdz on lollipop rendering the phone clean, then you send it. There will be noting to see for the lg service.
Sent from my H815 using Tapatalk
---------- Post added at 06:58 AM ---------- Previous post was at 06:56 AM ----------
raptorddd said:
may i ask you why? it cant be. i remeber reading about MM not letting you change system? is it cause of that.?
will there be a way to root it.? yes no maybe ?
Click to expand...
Click to collapse
It is because the locked bootloader will not allow the phone to boot if the recovery, system or boot (kernel) have not the exact checksum that it expects.
Sent from my H815 using Tapatalk
ObiDanKenobi said:
If you are on lollipop and you rooted without unlocking the bootloader, you can unroot by writing a kdz on lollipop rendering the phone clean, then you send it. There will be noting to see for the lg service.
Sent from my H815 using Tapatalk
---------- Post added at 06:58 AM ---------- Previous post was at 06:56 AM ----------
It is because the locked bootloader will not allow the phone to boot if the recovery, system or boot (kernel) have not the exact checksum that it expects.
Sent from my H815 using Tapatalk
Click to expand...
Click to collapse
its still not clear to me... if you have unlocked bootloader, can you have root and recovery for 6.0 MM. casue i think i read some post saying if you want root and twrp then go back to 5.1.1.
is it because they havent found a way or MM cant be rooted? sorry if am not getting this right . nut i rather ask then to not know.
To make it clear: if you have unlocked bootloader you can do anything - install twrp, root etc. If you have locked bootloader you can only root in 5.1, you cannot root in 6.0. With locked bootloader you can not have twrp either in 5.1 or 6.
I hope it is clearer now.
Sent from my H815 using Tapatalk
ObiDanKenobi said:
If you are on lollipop and you rooted without unlocking the bootloader, you can unroot by writing a kdz on lollipop rendering the phone clean, then you send it. There will be noting to see for the lg service.
Sent from my H815 using Tapatalk
Click to expand...
Click to collapse
Morning!Buf if the device is on bootloop i can still flash a kdz with lg up?is it possible?
It depends, most of them can, as the download mode does not require a lot of power and the big cores are not in use, but some could not connect the phone with lgup
Sent from my H815 using Tapatalk
and in case u cant flash kdz if the phone cant connect with lgup u are done?u are out of warranty then?i need root so bad!!!hahahahha!!

Downgrade from N to MM

hello, i just want to ask if its possible to downgrade from android N 7.0 to MM using flashfire? Did anyone try this yet
Status
Bootloader unlocked
Twrp 3.0.2.2
Rooted systemless
Android 7.0
Thanks
bigthree said:
hello, i just want to ask if its possible to downgrade from android N 7.0 to MM using flashfire? Did anyone try this yet
Status
Bootloader unlocked
Twrp 3.0.2.2
Rooted systemless
Android 7.0
Thanks
Click to expand...
Click to collapse
Yes, use fastboot or factory reset and install a custom rom. Do not restore (anything) with the version of TWRP you are using and you will be fine.
Sent from my Nexus 5X using Tapatalk
So i cant use flashfire and I have to use fastboot instead? Thanks
bigthree said:
So i cant use flashfire and I have to use fastboot instead? Thanks
Click to expand...
Click to collapse
Hmm, somehow I missed your actual question. I'm not familiar with the downgrade process using Flashfire since you want to factory reset to move back down to Marshmallow.
Sent from my Nexus 5X using Tapatalk
Ok so ill just use fastboot to downgrade, thanks man

Regain warranty by flashing stock rom ?

Since LG G3 has no unlockable bootloader if i flash back the stock rom i can hand it in to LG for warranty cant i ?
J0SH1X said:
Since LG G3 has no unlockable bootloader if i flash back the stock rom i can hand it in to LG for warranty cant i ?
Click to expand...
Click to collapse
Yes you can
Nice because my sim card wont be detected anymore in no rom
J0SH1X said:
Nice because my sim card wont be detected anymore in no rom
Click to expand...
Click to collapse
Already flashed stock to check if its modem issue?
Sent from my SM-G930F using Tapatalk
bender_007 said:
Already flashed stock to check if its modem issue?
Sent from my SM-G930F using Tapatalk
Click to expand...
Click to collapse
yeah after that i posted the question

Help with rooting lg g3 6.0 stock rom

Hello, i want to install cm on my lg g3 (D855) (android 6.0 UK stock rom) and i need twrp recovery for that and for the recovery i need to root my device but i dont know how...
i've tried many guides and no one worked for me. i also tried this guide and the kingroot always says "root strategy unavailable"
how can i root my device?
theres any way to install twrp without rooting ?
hope you can help me, thanks.
kenan7 said:
Hello, i want to install cm on my lg g3 (D855) (android 6.0 UK stock rom) and i need twrp recovery for that and for the recovery i need to root my device but i dont know how...
i've tried many guides and no one worked for me. i also tried this guide and the kingroot always says "root strategy unavailable"
how can i root my device?
theres any way to install twrp without rooting ?
hope you can help me, thanks.
Click to expand...
Click to collapse
One way is using kingoroot, then install SuperSU thru play store and make it install normally, then get autorec for mm and reboot to recovery
Sent from my G3 D852
kenan7 said:
Hello, i want to install cm on my lg g3 (D855) (android 6.0 UK stock rom) and i need twrp recovery for that and for the recovery i need to root my device but i dont know how...
i've tried many guides and no one worked for me. i also tried this guide and the kingroot always says "root strategy unavailable"
how can i root my device?
theres any way to install twrp without rooting ?
hope you can help me, thanks.
Click to expand...
Click to collapse
Wich rom are you using v30xxx??....
If you are on latest v30n then is not possible to root it
You need to downgrade to v30b to root it with kingroot...
Sent from my LG-D855 using XDA Free mobile app
cultofluna said:
Wich rom are you using v30xxx??....
If you are on latest v30n then is not possible to root it
You need to downgrade to v30b to root it with kingroot...
Sent from my LG-D855 using XDA Free mobile app
Click to expand...
Click to collapse
Yes im uaing v30n, is it possible to downgrade the version? I just have to flash v30b?
kenan7 said:
Yes im uaing v30n, is it possible to downgrade the version? I just have to flash v30b?
Click to expand...
Click to collapse
Yes flash v30b using lg flash tool or lgup
http://www.droidviews.com/install-marshmallow-kdz-lg-g3-d855-using-flash-tool/
Sent from my LG-D855 using XDA Free mobile app
new kingroot 4.9.7 ... please can someone verify if this version can now be use on v30n or v30e (sept. 1 - build date).
glyfeer said:
new kingroot 4.9.7 ... please can someone verify if this version can now be use on v30n or v30e (sept. 1 - build date).
Click to expand...
Click to collapse
I can verify Kingroot 4.9.7 doesn't work on v30n.....
Sent from my LG-D855 using XDA Free mobile app
cultofluna said:
Yes flash v30b using lg flash tool or lgup
http://www.droidviews.com/install-marshmallow-kdz-lg-g3-d855-using-flash-tool/
Sent from my LG-D855 using XDA Free mobile app
Click to expand...
Click to collapse
thanks alot! it worked

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