Temporary Fix for LG G4 bootloop issue(lengthens life)

[owlery_hk]

Luckily I use a Titanium backup schedule that runs a back up everyday.
So all is not lost!
However, i would loose that day's work, which is a pain, but... it could be worse lol
This is also a reason why I refuse to buy a phone with no external memory card slot..... which seems to be where the trend of anti-intellectualism and populism is taking us.

 

[steadfasterX]

Update regarding backing up:

Check out the new guide here: https://tinyurl.com/dlbackup

@XeniX_Force:
Please add the new backup guide instead of the current one in the OP!



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Sent from my LG-H815 using XDA Labs

 

[marco.deluxe]

I wish I saw this before sending my G4 in for repair.....
My G4 serial number 609 started bootlooping yesterday.
Bloody marvelous, as one might think that LG would have rectified the problems for boards manufactured AFTER they admitted the hardware issue.

Have you already contacted LG?
Is there the possibility that your G4 still will repaired for free?

---------- Post added at 10:00 AM ---------- Previous post was at 09:58 AM ----------

I got my G4 back a few days ago from the repair.
The board was exchanged for free.
Everything works fine again.
:good:

 

[owlery_hk]

Have you already contacted LG?
Is there the possibility that your G4 still will repaired for free?

---------- Post added at 10:00 AM ---------- Previous post was at 09:58 AM ----------

I got my G4 back a few days ago from the repair.
The board was exchanged for free.
Everything works fine again.
:good:

That I do not know, but I highly doubt it because my bootloader is unlocked.
I sent the phone to a chinese phone store for cpu replacement.
Will report back after I get it back.
They were very quick at repairing it. the repair was done on the same day....
It is the shipping that is taking absolutely forever.

 

[steadfasterX]

That I do not know, but I highly doubt it because my bootloader is unlocked.
I sent the phone to a chinese phone store for cpu replacement.
Will report back after I get it back.
They were very quick at repairing it. the repair was done on the same day....
It is the shipping that is taking absolutely forever.

That's why I'm happy to live in Europe
Bootloader unlock is no reason for reject here..



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Sent from my LG-H815 using XDA Labs

 

[wulsic]

For the people with broken big cores and wanted to test nougat on their H815, flash this modified stock v29a kernel.

H815_V29A_4CORES_BOOT.img
The only thing that is from the stock kernel is the cmdline to include maxcpus=4 boot_cpus=0-3
Ty @steadfasterX for the fix

 

[owlery_hk]

That's why I'm happy to live in Europe
Bootloader unlock is no reason for reject here..



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Sent from my LG-H815 using XDA Labs

LG UK sent my phone back unrepaired because apparently it was out of warranty.....

 

[chubaan]

Hello.
Thanks for the detailed guide. I have a stock G4 (t-mobile), started the bootloop issue some time last year and it was in my drawer ever since. I came across your guide and thought I should give it a shot. I followed all your steps, and here's what happened: (attached the picture, wasn't displaying here for some reason)

After that, I disconnected my phone from PC, pulled the battery out, put it back in and turned on the phone. Now I get "ERROR CODE 1009" on LG screen.
Any idea what that could be?

Thank you.

 

[andrewfx1]

Can we have modified kernel for 20p?or is it easy to modify it myself?

 

[rollyusher29]

Can I also flash the 4 core boot image via LGUP?

Do you also have tot file version of the 4 core boot image for h811 20p?

Thanks in advance

 

[steadfasterX]

Can we have modified kernel for 20p?or is it easy to modify it myself?

I can do that tomorrow maybe. Link the kdz you flashed or tell me the device model at least.
Everything can be done on your own if you want. you need to extract the kdz to get the boot image and then need to use bootimgtools to modify the commandline.

Can I also flash the 4 core boot image via LGUP?

Do you also have tot file version of the 4 core boot image for h811 20p?

Thanks in advance

No LG up.




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Sent from my LG-H815 using XDA Labs

 

[bakunoe]

I have a h818p variant

Enviado desde mi SM-N900 mediante Tapatalk

 

[steadfasterX]

I have a h818p variant

Enviado desde mi SM-N900 mediante Tapatalk

Read the OP. This is for unlocked devices only.



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Sent from my LG-H815 using XDA Labs

 

[chubaan]

I see now the OP says its for unlocked devices only. Guess im out of luck lol ?

 

[steadfasterX]

I see now the OP says its for unlocked devices only. Guess im out of luck lol ?

If you still can get into the download mode you can restore to stock with LG up

if this is not your productive device anymore and if you wanna help to get the unofficial unlock ready.. Let me know



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Sent from my LG-H815 using XDA Labs

 

[s-X-s]

This also may be a temporary fix... But I fixed my friends bootloop with it. Atleast could back up data. So far phone is alright..

 

[andrewfx1]

I can do that tomorrow maybe. Link the kdz you flashed or tell me the device model at least.
Everything can be done on your own if you want. you need to extract the kdz to get the boot image and then need to use bootimgtools to modify the commandline.



No LG up.




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Sent from my LG-H815 using XDA Labs

I have h815 international and I flashed imperium rom 14.2 based on v20p.thsnk you in advance

Στάλθηκε από το LG-H815 μου χρησιμοποιώντας Tapatalk

 

[steadfasterX]

I have h815 international and I flashed imperium rom 14.2 based on v20p.thsnk you in advance

Στάλθηκε από το LG-H815 μου χρησιμοποιώντας Tapatalk

just to be sure I mention it again: your device must be bootloader unlocked!

here u go (see attached)

@XeniX_Force : please add it to the OP


EDIT:
oh just realized you mentioned Imperium.. they use another kernel... just a second..

UPDATE:
@andrewfx1
modded imperium kernel for 20p (click) online.
@XeniX_Force add this one as well to the OP

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[chubaan]

If you still can get into the download mode you can restore to stock with LG up

if this is not your productive device anymore and if you wanna help to get the unofficial unlock ready.. Let me know



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Sent from my LG-H815 using XDA Labs

Sure buddy. Ill try to see if I can get in download mode once I het home today. Thanks for the help bro

 

[chubaan]

If you still can get into the download mode you can restore to stock with LG up

if this is not your productive device anymore and if you wanna help to get the unofficial unlock ready.. Let me know



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Sent from my LG-H815 using XDA Labs

This is not my everyday use device anymore. I've been away for a while now from rooting etc. So can you please let me know what are the things I need to do? Or maybe links to the posts?
I just tried booting into download mode, and it does work.

Thank you.