yashsingh1/xdaforums huggingface dataset:
[G4 Q&A, Help & Troubleshooting] rockyjacky:
Root your phone I will upload the script . You just run it using lgup... This patch will re enable all cores.
[G4 Q&A, Help & Troubleshooting] Salik Iqbal:
I am rooted and twrp installed on xenon hd ROM.. how to disable the 2 cores? Any help [MENTION=2235737]rockyjacky[/MENTION]
[G4 Q&A, Help & Troubleshooting] raslvideos:
[MENTION=2235737]rockyjacky[/MENTION], give me a help, can you upload the script to re enable all cores of LG G4??

---------- Post added 22nd September 2016 at 12:25 AM ---------- Previous post was 21st September 2016 at 11:54 PM ----------

[MENTION=2235737]rockyjacky[/MENTION], give me a help, can you upload the script to re enable all cores of LG G4??
[G4 Q&A, Help & Troubleshooting] Aquahawk911:
i don't understand, can you clarify how this is done ?
[G4 Q&A, Help & Troubleshooting] nabil427:
Any idea for h811 20o dread bootloop? i have only download mode
[G4 Q&A, Help & Troubleshooting] rudey:
I gave up, sold mines on eBay..NEVER will buy another LG phone
[G4 Q&A, Help & Troubleshooting] Loulou-13:
Hi !

I just have done a big underclock these 2 cores to 960 mhz (for example ),i think that it's sufficient...
[G4 Q&A, Help & Troubleshooting] aeneas84:
How you did that?
[G4 Q&A, Help & Troubleshooting] Loulou-13:
With the app "kernel aduitor" ;)

And you can change all kernel parameters too...
[G4 Q&A, Help & Troubleshooting] aeneas84:
Thanks for the answer but i need to findanother solution... i have the ilapo problem and wanna try modify the system.image of MM.to disable the 2 big cores
[G4 Q&A, Help & Troubleshooting] CBK1993:
Reactivate big core

Hello,

do you know if there are any methods to reactivate big cores ?
[G4 Q&A, Help & Troubleshooting] ObiDanKenobi:
Flash a kdz file and you have reactivated the cores.
[G4 Q&A, Help & Troubleshooting] CBK1993:
Salut, dar va aparea inapoi problema de boot loop, nu ?
[G4 Q&A, Help & Troubleshooting] ObiDanKenobi:
That is correct, you will have again the bootloop problem. The idea with disabling cores was to avoid the bootloop. When you disable the fix, you enable the problem.

I thought that you were asking in the context: you were done with backup and stuff and want to make the problem reproducible to send the phone to warranty.
[G4 Q&A, Help & Troubleshooting] gallego18:
Did you find how to do this? Im looking for that, i think that modify a kernel will solve this, but i dont know how to do this and what parameter must change to disabled 4 and 5 cores...

I think that can be posible, if somebody is a developer here can confirm this?
[G4 Q&A, Help & Troubleshooting] gallego18:
But it works on early boot? that is to say just when the lg logo appear...

Or these changes take effect once the phone enters the android system?

Thank you
[G4 Q&A, Help & Troubleshooting] ..::Mobile Smoker::..:
after reboot mobile big cores enabled automatically

any command or script which disable big core permanently after reboot
[G4 Q&A, Help & Troubleshooting] jskasia:
Hey you guys, if one of you are using the defected device with bootloop problem (H818p model).

Could you guys please help me in testing my new mod (Big core disabled) based on Marshmellow 6.0 v20e

here http://xdaforums.com/g4/themes-apps/theme-t3466595.

Very appreciated for you support. :) Thanks in advance.
[G4 Q&A, Help & Troubleshooting] edint3000:
This is for H818P, do you have one for H815?
[G4 Q&A, Help & Troubleshooting] LineArc:
i am rooted but dont know what to do to get rid of the faulty cores, i want to use it as a secondary fone.
[G4 Q&A, Help & Troubleshooting] aeneas84:
Flash this file with lgup as upgrade not refurbish. it's for Marshmallow OS (6.0).
[G4 Q&A, Help & Troubleshooting] denyboy:
One question.

Is it possible that only one core is defective or is the whole dual-core defective (more likely)

is there need to try to enable core 4 or core 5 to see if only one of them is defective or its 100% they are both defective (whole cpu)
[G4 Q&A, Help & Troubleshooting] skytechja:
can anyone help me!!!! im using sprint version

LS991 running zv6

i have gotten my phone to boot out of the loop naturally by leaving it in my freezer... as we speak i have my pictures etc being backed up to my sd card IN the freezer... lol

im gonna be using titanium backup to backup my apps n data to my mem card also... My phone was already rooted as well
[G4 Q&A, Help & Troubleshooting] erdigeg12:
people. please help me. I have 4 lg g4 h811 t-mobile affected by this issue. 2 mine, 1 of my wife and 1 of my sister in law. I want to disable the cores but i can'tfind a way to do it since the ilapo fix rolling around doesn't support h811
[G4 Q&A, Help & Troubleshooting] killerxda:
Need a flashable KDZ Big Core disable fix for H818P Marshmallow v20E, can someone help? The freezer gets it to start but only until the home screen, after that it restarts

Edit: Somehow it started up in Safe Mode, just need root + unlock + Big Core patch now :D
[G4 Q&A, Help & Troubleshooting] malic11101:
I need LG G4 F500S big core disable TOT file for marshmallow.

The phone has not bootlooped yet, but still want to disable big cores for prevention.
[G4 Q&A, Help & Troubleshooting] supreme329:
Need file for H811 if its available please
[G4 Q&A, Help & Troubleshooting] coursemyhorse:
I have an LG G4 H815 which I successfully used the Lollipop .tot file on using LG UP. If I want to run Marshmallow instead of lollipop, can I just flash the Marshmallow .tot file instead despite being on lollipop currently?

EDIT: I think I do not realize what a .tot file actually is. I just noticed it is only 4MB in size so is not a full firmware. So I guess I would need to be on Marshmallow first before flashing the .tot file. So can I just flash a Marshmallow ROM, wait for the phone to then enter boot loop and flash the Marshmallow .tot file on top after?
[G4 Q&A, Help & Troubleshooting] malic11101:
Upgrade to Marshmallow first using LG bridge, TOT or KDZ file.

Then flash H815 big core disable tot file for Marshmallow using LGUP.

I just disabled big cores even when my phone is not in bootloop yet. I just did it as precaution.
[G4 Q&A, Help & Troubleshooting] coursemyhorse:
Malic thanks for your help. I am a slightly awkward case I think. Let me explain. I have a H815 Taiwan version which in unable to have the boot loader unlocked from official LG site. Does this mean that if I am unable to unlock boot loader, then I cannot root, and therefore cannot upgrade to Marshmallow? I see there are threads about rooting on lollipop. It's all a little confusing to me sorry.

My objective is to get to Marshmallow with 4 cores enabled permanently. I am currently on Lollipop 5.1. By the way, If I try to do OTA update to 5.1.1 it fails. I assume this is to be expected since I am running a) The .tot file for big core disable and b) I have a Taiwan handset in the UK and maybe this stops OTA working.

So this is what I think I should do to get to Marshmallow with 4 cores enabled permanently. Please correct if wrong.

METHOD 1

1: Flash stock .kdz Marshmallow

2: Phone will enter boot loop straight after so...

3: Flash marshmallow .tot file to disable 5 cores

4: Somehow root without being able to unlock boot loader and enable 4 cores.

I'm not sure if step 4 is possible so would I need to do something like:

METHOD2

1: Flash twrp recovery using adb on existing current lollipop 5.1

2: Use twrp to load in the supersu zip and get root

3: Flash stock marshmallow ROM

or custom rom with root baked in

or custom rom with .tot file in

or....I don't know lol

Appreciate any clarification.
[G4 Q&A, Help & Troubleshooting] gstamosbg:
Any chance to run automatically 4 cores without need to use device manager when i reboot my phone?

Rooted, lolipop.

I mean - run automatically 4 cores without needing to run it manually. Becouse i want to give this phone to my mom to use it :).

Greetings
[G4 Q&A, Help & Troubleshooting] malic11101:
METHOD 1

1: Flash stock Marshmallow Kdz for your specific model. You can use LG Bridge too, as its more convenient.

2: Phone will enter boot loop straight after so...

3: Flash marshmallow big core disable .tot file of your specific model to disable big cores.

In this way, you will have your Marshmallow upgrade with big cores disabled.

You cannot root or modify anything with locked bootloader.
[G4 Q&A, Help & Troubleshooting] coursemyhorse:
Even on lollipop?
[G4 Q&A, Help & Troubleshooting] JeffMD:
soooooooo... google finds nothing for verizons g4, and it seems most packages dont even carry US model phones. Are we totally SOL for this fix?
[G4 Q&A, Help & Troubleshooting] killerxda:
I have flashed H815 with v20D and core disable fix, after a long time of optimizing apps it restarted on Finishing Boot. I put it in the freezer for 1 hour and it went ahead on to the home screen but hanged after a few minutes while trying to install CPU-Z app and later again while checking Storage. Is it because the eMMC is damaged? What can i do?

Its not going in Download mode now, shows QDLoader 9008 after the last hangup,
[G4 Q&A, Help & Troubleshooting] malic11101:
On lollipop, its possible as per my knowledge.
[G4 Q&A, Help & Troubleshooting] stojshic:
I just published an app for that, look it up in themes and apps section, you have download link there. And hit thanks if it does the job ?
[G4 Q&A, Help & Troubleshooting] chrisharris:
making changes to the 'online' file does nothing. it does turn off the cores for a second or two but after that, the cores turn on automatically. I have also tried other apps like kernel toolkit /kernel adiutor, still the same problem. Any other way of turning the cores off permanently?
[G4 Q&A, Help & Troubleshooting] stojshic:
[MENTION=8004278]chrisharris[/MENTION]

No app, or editing file, will permanently disable cores, it will disable them once Android boots, so while booting, it must boot with 6 cores. Only option for totally disabling cores, even while booting is flashing tot file. If you do want to disable cores AFTER booting, tell me, I'll help you
[G4 Q&A, Help & Troubleshooting] chrisharris:
Hi , Thanks for the reply.

OK then, what is the process for disabling cores once it boots up. I'll try to never restart my phone after that.

BTW i have already tried kernel adiutor,toolkit and changing the 'online' file .Nothing works
[G4 Q&A, Help & Troubleshooting] stojshic:
Version 1.1 of my G4coresFix app has been released. If you can't update old app, uninstall it and then install this one. Thanks

- Greatly optimized app size (now only ~500kb, was over 10mb)

- Optimized app opening speed

- Some minor modifications
[G4 Q&A, Help & Troubleshooting] LineArc:
Where to find the app
[G4 Q&A, Help & Troubleshooting] stojshic:
[MENTION=5237232]LineArc[/MENTION]

goo.gl/158DCQ
[G4 Q&A, Help & Troubleshooting] LineArc:
Should i be rooted? And should I be on lollipop or marshmallow. My set is lying dead for more than 6 months now
[G4 Q&A, Help & Troubleshooting] stojshic:
That app is only for when your phone is fixed by applying ilapo fix, and it works on 1 core only. Then you must root and open the app to enable 4 cores instead of 1...
[G4 Q&A, Help & Troubleshooting] LineArc:
So it is of no use to me as mine is tmobile and i don't think we have a tot file for tmobile yet
[G4 Q&A, Help & Troubleshooting] dementeskolar:
Hi

So this app g4corefix ,

It will permanently deactivated the big cores?

I mean if I reboot it will be deactivated with this app?

I have a LG g4 H811 T-Mobile Rooted with core 4-5 deactivated I only have cores 0-3 active and it runs pretty good no bootloop problem, but I want something to ve permanent when you restar ir power off

I used the scrip mentioned on this post to disabled my big cores
[G4 Q&A, Help & Troubleshooting] garro:
h811 reboot loop

hi. so I have a model h811 . I have twrp and root installed on it. I can get it to boot up for atleast 5 minutes. I'm wondering if I can install an app and use it to disable the cores. is there an app I can use to disable the cores permanently ?

---------- Post added at 04:37 PM ---------- Previous post was at 04:31 PM ----------

hey how did you get to disable your cores on your h811? please help
[G4 Q&A, Help & Troubleshooting] dementeskolar:
--.-.-.-.-.-.-.-?-.-?-.-?--.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-

This is what I did

[MENTION=2158849]Agimax[/MENTION] said :

Why not just edit the files below for the two large cores (if you have root):

/sys/devices/system/cpu/cpu4/online (open file and change from a one to a zero)

/sys/devices/system/cpu/cpu5/online (open file and change from a one to a zero)

You could also just have the startup file do it (can modify the ripped system partition & put back on phone):

etc/dir/init.qcom.post_boot.sh (find your processor code - 8992 and add echo lines there with the rest of the cpu commands).
[G4 Q&A, Help & Troubleshooting] garro:
yeah I saw this, but where do I disable the files or how do I it. what do I use to disable them
[G4 Q&A, Help & Troubleshooting] stojshic:
[MENTION=6673524]garro[/MENTION]

There isn't an app to disable cores completely. With any app, phone boots at 6 cores, and just after booting it can disable 2 big cores. If that's what you want, I can edit my app so that it disables two big cores on boot
[G4 Q&A, Help & Troubleshooting] garro:
Sure i'd like to give that a try. Ain't got no other options right now . may i have the app please?
[G4 Q&A, Help & Troubleshooting] stojshic:
[MENTION=6673524]garro[/MENTION]

Sure. I will edit it and post it here for you to try it. Just give me few hours
[G4 Q&A, Help & Troubleshooting] dementeskolar:
[MENTION=6673524]garro[/MENTION]

Look for Rom toolbox pro app and you can edit the files mentioned below

Once you intalled just follow the path

[MENTION=2158849]Agimax[/MENTION] said :

Why not just edit the files below for the two large cores (if you have root):

/sys/devices/system/cpu/cpu4/online (open file and change from a one to a zero)

/sys/devices/system/cpu/cpu5/online (open file and change from a one to a zero)

You could also just have the startup file do it (can modify the ripped system partition & put back on phone):

etc/dir/init.qcom.post_boot.sh (find your processor code - 8992 and add echo lines there with the rest of the cpu commands).

If you have another question let me know, I had been using my LG G4 only with 4 cores for about 2 years with no issues, the only thing is to always keep an eye in the battery percentage because if your LG G4 dies / restart you will have to re-edit the files to disable the big cores.
[G4 Q&A, Help & Troubleshooting] garro:
thanks for the reply. okay so I disabled both CPU 4 and cpu5 but my phone still rebooted. so I disable CPU 1 2 3 4 and 5 and left CPU 0 on. it stayed on for about 5 mins then reboot again. so i disabled CPU 0,1,2,4, and 5 and left CPU 3 on . my phone stayed on for another 5 mins then rebooted again. so I guessing maybe there's another problem. not sure what it is. I don't know wht else to do now

sigh. never buying another LG phone. should have sticked with my s5
[G4 Q&A, Help & Troubleshooting] stojshic:
[MENTION=6673524]garro[/MENTION]

If it reboots even after disabling big cores, then there is no hope for your phone. You can open your phone and put pressure on CPU, that should make it a bit more stable...
[G4 Q&A, Help & Troubleshooting] garro:
what I realize tho is that when I disable CPU 4 and 5 . then check. in the app CPU z . like a minute after I see CPU 4 back online. so each time I disable them a few moments after they automatically come back online
[G4 Q&A, Help & Troubleshooting] dementeskolar:
You can try to use 1 core only, just left 0 cpu online and 1-5 offline, it will be very slow but you can use it to recover some data.

If you put them off-line 1-5 cpu there is no way they are going to be back online by itself .
[G4 Q&A, Help & Troubleshooting] 99sago99:
very nice
[G4 Q&A, Help & Troubleshooting] SuperSoC:
Hi

I have the H815P model running Marshmallow that had the bootloop issue. Did a reflow on the CPU with a heat gun but it worked for one day only. Lately I applied the ILAPO fix to disable all cores, now it is working with only CPU 0 enabled and it is very slow. I want to enable the four cores but my phone is not rooted and unlocking the bootloader is not supported for that model.

Is there a way to enable all four cores on MM with locked bootloader?
[G4 Q&A, Help & Troubleshooting] last1left91:
And give away 25 $. Don't be funny!!
[G4 Q&A, Help & Troubleshooting] SuperSoC:
Would've rooted the phone to re-enable the cores but there is no way to unlock the bootloader which is making everything complicated. Maybe the only way is to downgrade to Lollipop and use the "Low Effort Root" https://xdaforums.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765

Since it is currently the only way to root the G4 with a locked bootloader, but I don't see the phone model "H815P"supported.

Here is what it says: "International H815 10c Version (NOT H815T, H815TR,

H815P

, etc - you will lose internationalization and possibly features)"
[G4 Q&A, Help & Troubleshooting] AMoizK:
I need an app to auto disable 2 big cores on startup for lg g4 h811
[G4 Q&A, Help & Troubleshooting] stojshic:
[MENTION=5593930]AMoizK[/MENTION]

The app can disable Big cores only after phone boots, not before boot. If thats what you want, I can do that for you...
[G4 Q&A, Help & Troubleshooting] AMoizK:
Yeah thats pretty much what I want
[G4 Q&A, Help & Troubleshooting] hereticangel:
Hi

Long story short I can't RMA my phone, because of glass is broken on the lense. Waiting for this part from china now, will RMA the phone one I have the part.

I want in mean time give the phone in usable condition back to my friend, I sold him the phone with warranty which it is still have till November 2017.

I have the 1 core fix applied with root access on Lolipop.

I have lg 4 core fix applied and then the phone is fine working with 4 cores, is there anyway i can make this run on startup ? The cores disable on boot each time.

Have tried editing the system files also.
[G4 Q&A, Help & Troubleshooting] Spartankolo:
I have an issue, when I disable the 2 big cores one of them stays off as it is supposed to but the other one reactivates itself automatically, it happens if I use kernel auditor and if I do it manually with this method as well, help :(
[G4 Q&A, Help & Troubleshooting] AZstyle:
thx for sharing, will be tested
[G4 Q&A, Help & Troubleshooting] stojshic:
G4coresFix activates all 4 cores on each boot, just give it a minute after booting... It will activate automatically
[G4 Q&A, Help & Troubleshooting] asayed:
i want to know how can i open a tot file and further edit/open the file

i want to know how can i open a tot file and further edit/open the file i want to know how can i open and edit files in a tot file....

/sys/devices/system/cpu/cpu4/online (open file and change from a one to a zero)
[G4 Q&A, Help & Troubleshooting] stojshic:
I think the file is signed, and you can't edit it. You might edit it, but then you wouldn't be able to flash it, IMHO...
[G4 Q&A, Help & Troubleshooting] riper2510:
Theres is a method for the h810 you have to flash it to h810pr from claro firmware v10g, then you can use bigcore disable tool. And from there you can root the phone and use kernel auditor to edit init d and renable the cores.
[G4 Q&A, Help & Troubleshooting] traxdell:
help h811

hi,

a solution for the h811 plz.

why can't we do a small 4mb TOT File for the G4 h811, is it so different from the other variants, is there a security somewhere that lock this variant to be able to accept a big core disable 4mb TOT file...

plz help to all who knows any possible solution...

i saved a g4 h812 and "4" g4 h815 with the big core disabling tool, and keep waitin a solution for the h811......... HELP
[G4 Q&A, Help & Troubleshooting] hpl1950g:
How can I make the LG G4 H818p boot without big cores in the first place?
[G4 Q&A, Help & Troubleshooting] rizkhan999:
What is CPU7 ???

Dear @Agimax or any one who can answer!

There are mentions of "cpu7" as well, in the full TOT files as well as in the rooted system image IMG files of all the LG G4 variants, in the same way as there are mentions of cpu's from "cpu1" through "cpu6" in those files. I am talking about the following lines of code:

/sys/devices/system/cpu/cpu7/online

My question is... isn't G4 Hexa-core? So what is this CPU # 7? Any idea?

Secondly, if I echo all instances of two big cores (in full TOT files or the rooted system image files) to the value 0, and then flash that TOT or IMG file in to my G4, would the ILAPO issue be solved? Would the two big cores be disabled from the start or they will be disabled only after the phone has booted into the system successfully?

Thirdly, would LG devices accept TOT files to be flashed, that are modified by any one other than LG?

EDIT: Got the replies here and here.
[G4 Q&A, Help & Troubleshooting] carlos15black:
you can flash the tot modified with no problem but it doesnt work when the phone boots, just when the phone starts loading the software so you can't turn off the cellphone
[G4 Q&A, Help & Troubleshooting] umar baig:
lg g4 h811 tot.file

please guys do work for this variant .and create Tot file as many members in this post request for this file
[G4 Q&A, Help & Troubleshooting] Ph34r_999:
LG G4 Bootloop FIXED 100%

[MENTION=2846417]stojshic[/MENTION]

A few days ago, my LG G4 was left with the bootloop problem, after researching on the subject, I realized that this problem affected several G4 models and that it had no definitive repair, unless, send for warranty. Today I saw this video: "https://youtu.be/lbJXwPmbXFc" and following the steps of installing the MSM Big Core Disable Tool File through LGUP, I finally managed to make my LG G4 boot normally but only with core0 active.

Now on this topic, I am immensely grateful to [MENTION=2846417]stojshic[/MENTION], for the excellent work in making your app, I got it for the 4 active colors (core0, core1, core2, core3) and the LG G4 works very well, the best thing is that with each restart, the app automatically activates the 4 cores. Thanks [MENTION=2846417]stojshic[/MENTION].

You deserve this consideration, I will leave a thank you on your topic, and I will leave a donation for your work.:good:
[G4 Q&A, Help & Troubleshooting] stojshic:
Thanks so much for kind words. It really means a lot to me
[G4 Q&A, Help & Troubleshooting] Ph34r_999:
[MENTION=2846417]stojshic[/MENTION]

Hi, Can you help me? I did successfully all that I said the other time, but it was with the version of Android 5.1 (European v10D firmware). I have the file to disable rev8 cores which also gives Android 6.0, but when trying to do the same procedure, LGUP gives me an error when trying to flash that file (error code 0x2000 secure device, but unsecure image). I researched this error, and they said it had to do with a file "LGUP_8994" that had to subtract, I already did it, at the moment I have the v4.3 of that file, and it always gives me the same error.

Do you know the right firmware for Android 6.0 in which this .tot rev 8.0 file can be used to flash? I already tried to flash v20d, v20g and when I try to flash the .tot file rev8.0 disable cores it always gives the same error ... Thanks. Sorry for the big text.
[G4 Q&A, Help & Troubleshooting] stojshic:
[MENTION=4516134]Ph34r_999[/MENTION]

Try with this file:

https://xdaforums.com/attachment.php?attachmentid=3959845&d=1481034277
[G4 Q&A, Help & Troubleshooting] Ph34r_999:
It flashed without error, but the file you gave me is the same as what I have, how did it work? Any difference?
[G4 Q&A, Help & Troubleshooting] stojshic:
Yeah, the one you have probably isn't signed, that's why it gave you an error...
[G4 Q&A, Help & Troubleshooting] Ph34r_999:
Ok, I'll save this file you gave me to use in the future when you need it. You're a Pro. Thank you very much. I appreciate your help.
[G4 Q&A, Help & Troubleshooting] rabunz1105:
Lg g4 h818p

Hello,

I have a Lg G4 H818P with 20c software installed with the ILAPO issue. I couldn`t find a bootloop fix for this version, so I decided to try the fix for 20a, it worked. So anyone with the same software version as 20c, download the Big Core fix for 20a and flash with LGUP.