yashsingh1/xdaforums huggingface dataset:
[G4 Android Development] maelever:
After flash this file in twpr and always go well i restart my phone "lg g4 h815" but it doesn't start. I try to flash the kdz 20A with lg flash tools but it doesn't work, it told me bad connection to server. now i try LGUP but it don't recognize my phone.

It is brick.. some idea?
[G4 Android Development] sudman:
installed as per instructions on Post 1, all updated very smoothly and now running rooted Marsh Mallow. Thanks OP.
[G4 Android Development] CAJAX:
Hi! I followed all steps (two times) but as you can see on screeshot kernel and android version are OK and software version number is v10d as it was before flashing, not v20a.

Did i miss some step?
[G4 Android Development] b3ndik:
Same thing here
[G4 Android Development] Resync:
What is this about 20b? Is it out yet?

And can you do a flashable update if it exist already?
[G4 Android Development] Follow_and_Feel:
Same for me. Just read in the 20B Thread that you have to delete cust folders? What is that? :confused:
[G4 Android Development] orhtun01:
Deleted. Wrong place.
[G4 Android Development] AlexanderKgr:
Where can i find European 20a kdz non polish?
[G4 Android Development] goran_oh:
For now only polish 20a kdz online
[G4 Android Development] Loulou-13:
hi !

i have the bootloader locked . There are a solution for to root this MM 20B with fastboot ??? i don't find it ...

or other solution for locked bootloader ???
[G4 Android Development] syedhasanzaidi:
THANKS

Thank you so much for the process..... I was on CM13 but only issue I was facing was Camera Quality (greenish line and poor quality)

Thanks again
[G4 Android Development] almmpt:
The KDZ H81520A_00.kdz and H81520B_00.kdz that autoprime have in his server is EUR-XX?

Thanks
[G4 Android Development] syedhasanzaidi:
Yes its Eur
[G4 Android Development] dtective:
Can someone mirror, please? These links are so slow. I have tried for 3 days now, from the UK, on a 100mbit down connection and the speeds are ridiculously terrible! I am getting speeds like 1kB/s, if I'm lucky it'll jump up to 19kB/s for a moment.
[G4 Android Development] vegetaleb:
Can we flash a custom rom LP instead of restoring a backup in step 3?

Is this method gonna wipe the phone's memory?
[G4 Android Development] vegetaleb:
Please help! I still have the 7 HD 6.0 Rom ready in case it can work, just give me the green or red light :fingers-crossed:
[G4 Android Development] DaFelix:
Ok. I have this question (might be stupid, but still) - I have a G4, unlocked bootloader and rooted. If I flash these files over, is the new bootloader going to be unlocked as well, or it will bring the phone to stock variant? I am asking this, because I had some minor issues with the phone and I want to change it in the store, but if they see the unlocked bootloader, my warranty will not be valid.
[G4 Android Development] masze:
No!
[G4 Android Development] ziondido:
ho no!! its stuck on the lg logo,what should i do?

and it doesnt let me go to recovery
[G4 Android Development] magneto18:
Thanks a bunch...
[G4 Android Development] finarpl:
Works very well.

Thx Man
[G4 Android Development] KeepingItCuttingEdge:
Newest July 20O Firmware

Will you be doing a FABULOUS thread like this for the newest update? Hope so! THANKS
[G4 Android Development] ChristosPas:
if i have an unlocked bootloader should i still download and install the flashable bootloader?
[G4 Android Development] Razertje:
Lol and you guys never followed the G3 update to Lollipop? Almost no visual changes over 4.4 =)

Don't know what you guys expected.
[G4 Android Development] fr33kiLL:
bricked my device with try to flash SuperSu zip :( cant get back into bootloader, adb devises says unautorized, no way to get into bootloader or TWRP? Broken G4?
[G4 Android Development] asce1992:
Guys, news about camera? (new features)
[G4 Android Development] Underworled:
Try to get into download mode.
[G4 Android Development] fr33kiLL:
i´m in DL mode. what to do then?
[G4 Android Development] Underworled:
Ok, we cant flash v20a kdz with flashtool.. then u just can flash v10 kdz.
[G4 Android Development] fr33kiLL:
try to flash v10E, no way, get error, cause of new BL i guess
[G4 Android Development] xN2iicolas:
no...
[G4 Android Development] derekcranson:
I had the same problem, fixed by

Boot into recovery, twrp

Flash Boot and system of 20a then reboot.

Do not run supersu.

the phone rebooted in seconds
[G4 Android Development] fr33kiLL:
how to boot in recovery on an ADB unauthorized and bootlooped device?!?!:crying:
[G4 Android Development] derekcranson:
If TWRP is installed

Take out battery

Give it a few seconds

Reinsert battery

Hold volume down and power button until lg logo appears

Release power button only and then hold it down again until a white screen appears.

Release both buttons

Use vol buttons for up and down and power button for enter.

Go to yes press enter

another screen appears

Again go to yes and press enter

Phone goes into recovery mode.

This can wipe your phone although it didn't with mine.
[G4 Android Development] 5nickers:
isn't there a button combo that you can press? On the G2 it was Power+Vol down until it boots then release it for half a sec and then press both again until you end up with a firmware reset screen. Confirm all the questions and the G2 booted into twrp.

Edit: someone was a few seconds faster :D
[G4 Android Development] genesixxbf3:
with your finger
[G4 Android Development] fr33kiLL:
now it stucks on bootloader unlocked message and fastboot command not working
[G4 Android Development] asuraaaa:
someone can upload to Mega the file LG-H81520A-Flashable.System.zip please? My internet connection today is very bad

thanks!
[G4 Android Development] dusu84:
I flashed all zips as in first post written but for me software version is still 7 hd 5.1 but im on marshmallow!??

I cant flash any kdz for a cse flash.

Any ideas how to fix the software version?
[G4 Android Development] Underworled:
Its easy.. Edit Build.prop
[G4 Android Development] dusu84:
is everything allright although the software version is 7 hd 5.1 instead of v20a?
[G4 Android Development] Toxina:
can i flash twrp on marshmallow? just double checking~
[G4 Android Development] Prazaar:
Delete the cust folder in ./

[MENTION=5686512]dusu84[/MENTION]

Gesendet von meinem LG-H815 mit Tapatalk
[G4 Android Development] mosec:
So can this be flashed through twrp or what? System only or al zips should be flashed? Can we downgrade to Lollipop if needed? Thanks
[G4 Android Development] Illux:
Apparently S3v3n managed to get root on the road, so we should have that done. Just read Xposed is not working anymore - how you mean? Like there is no Xposed for 6.0 yet or changes have been made that will prevent Xposed from ever working again? And just to get stuff straight, in case I flash things corrently, TWPR will still work, right?
[G4 Android Development] fr33kiLL:
it seems TWRP is not installed anymore -.-

no way to get it back to work -.-

cant flash any KDZ, factory reset not working, its lost...
[G4 Android Development] Razertje:
LG Bridge? Try the Upgrade error option.
[G4 Android Development] johnny8910:
Strange?

I did exactly as it says in the OP, but when I told TWRP Recovery to reboot System it says NO OS installed!

So I flashed all zips again, but still the same.

I went ahead and rebooted anyway and all was fine with the new Marshmallow rom Booting and installed.
[G4 Android Development] fr33kiLL:
Bridge says all is correct
[G4 Android Development] betovanbuuren:
KDZ not working with flash tool
[G4 Android Development] fr33kiLL:
no DL Mode says H81520A so its over
[G4 Android Development] betovanbuuren:
?? what you mean?
[G4 Android Development] Warmax88:
Is there any mirror for system? 10h remaining to download :eek:
[G4 Android Development] Indicious Flow:
Got the same issue, and DL mode also stated H81520A. So worst case scenario is to wait for a updated Flash Tool i suppose
[G4 Android Development] asuraaaa:
when i try flash the file .bootloader, the recovery TWRP say error executing updater binary in zip

why?
[G4 Android Development] fr33kiLL:
my problem is i didnt have a second mobile here -.-
[G4 Android Development] Indicious Flow:
Well we both are on equal grounds with the same issue, so there's nothing much we could really do until another way of downgrading the bootloader is found.
[G4 Android Development] Razertje:
How did you manage to get it this way? :/
[G4 Android Development] Indicious Flow:
Well I went a little reckless with stuff and accidentally flashed SuperSU together with the 4 zips and yeah, stuck there with bootloops in my hand xD
[G4 Android Development] Resync:
are there different modems (files) for Poland / Germany / EUR ?
[G4 Android Development] derekcranson:
Take out battery to stop loop go into twrp recovery again and flash the four files again

say no to root option which loads supersu.

When its all done then follow this link

http://xdaforums.com/g4/development/repack-kernel-root-android-6-0-t3232387

this will give you root again

When you install the four files you are not installing a recovery image therefore twrp should still be there.
[G4 Android Development] Indicious Flow:
Well if you noticed where I'm from, you should know that mine's a locked bootloader set xD
[G4 Android Development] failax:
I restored my backup and i don't hear sounds anymore.What can i do?
[G4 Android Development] derekcranson:
How did you flash the files and supersu in the first place if you can't access twrp.
[G4 Android Development] smartgid:
I know that this is for the H815 LG G4, but is there any chance of this being ported to the H811 T-Mobile variant of the LG G4?
[G4 Android Development] Indicious Flow:
You know there's this app called "Flashfire" right? :)
[G4 Android Development] adz3d:
Anyone had luck with xposed?
[G4 Android Development] autoprime:
for those who are stuck.. what exactly happens when you try to use an older KDZ to "unbrick" in download mode? Flashing 10D or 10E KDZ doesn't work?
[G4 Android Development] Indicious Flow:
Tried KDZ-ing 10C yet unable to flash due to the bootloader being 20A, reaches 9% at flashtool and error. [MENTION=2684188]autoprime[/MENTION]
[G4 Android Development] betovanbuuren:
Can we flash the below files with FF for those who have locked bootloader?

LG-H81520A-Flashable.System.zip

LG-H81520A-Flashable.Modem.zip

LG-H81520A-Flashable.Boot.zip

LG-H81520A-Flashable.Bootloader.zip

If so, what should be the order ?
[G4 Android Development] Lennyuk:
No, if you have a locked bootloader you cannot flash these images, if you want to use them you need to unlock your bootloader.
[G4 Android Development] autoprime:
I see. And if you try to flash 20A KDZ what happens exactly... same error at 9%?

A recent Verizon G3 update changed things to try to block downgrade.. but without using anti-rollback. I think that might be what's going on here. No fuses are blown etc (for antirollback) but instead the download mode and kdz have changed their requirements. For example... Verizon G3 users could not flash a downgraded TOT using the old DLL file with LG Flash.. so instead they used a newer DLL with a downgraded TOT and flashing went fine.

I have a feeling the Flash Tool 2014 is erroring on 20A due to the new DLL inside the KDZ file. And flashing older KDZ is erroring because it wants the new DLL.

So... for those who have locked bootloader and are stuck.. you might have to wait for new KDZ Flash Tool... OR wait until 20A/20B is released officially for your phone and then fix it with LG Bridge.

For those on unlocked bootloader... I'm not sure how you are stuck. none of my zips for 20A included recovery.. so flashing anything would have left TWRP installed and you should be able to boot into TWRP by going through the Factory Reset menu.

And as I've said in the OP... there is no anti-rollback used here so those who are unlocked and have TWRP installed... you can flash old bootloader zip.. downgrade to Lollipop etc... but it will all have to be done in TWRP as the KDZ Flash Tool 2014 seems to no longer work with updated KDZ files.

People who have locked bootloaders should not be trying to flash these. As OP stated.. this is for those with TWRP. It MAY be possible to use flashfire to flash boot/system zips... but that method has not been tested by me and is not recommended. Also... without an unlocked bootloader there is NO WAY TO ROOT ANDROID 6.0... so if you do manage to flash it with flashfire you are stuck without root and no way to easily downgrade at the moment. Best to wait until 6.0 KDZ is officially out for your device.. but risk is up to you.
[G4 Android Development] Indicious Flow:
Hahas understood. I was bored and decided to become a guinea pig to test it out anyways. Flashing 20A gets rejected immediately through the kdz process. So best bet would be like what you stated for a Flashtool update or official Marshmallow roll out by LG Bridge.

What's done has been done. [MENTION=2684188]autoprime[/MENTION]
[G4 Android Development] pupps96:
perfect! also installed the root now expect Xposed
[G4 Android Development] failax:
Flashing again 20a zip files, audio has come back, but it is possible to return to Lollipop with audio working?
[G4 Android Development] autoprime:
you mentioned earlier you "restored backup".. but what is in that backup? did you reflash the entire Lollipop bootloader, boot image, modem and system? if you're just using twrp backup then that only restores system/data/boot... but as far as I know doesn't restore modem or bootloader.

I'd suggest flashing L bootloader, modem, boot and system... and you may have to restore data from original backup (or wipe data and start fresh) as Android 6 may have altered data in some way.

I have a H815 10C thread with the same files as this thread.. only for 10C.. they may help http://xdaforums.com/g4/development/stock-h815-10c-stock-rom-kdz-t3141866
[G4 Android Development] Lennyuk:
Anyone had any success getting SD cards to work the way they are meant to in Android M?

Flashing this corrupted my sd, reformatted and it works but it is not being "adopted" into internal memory like it is meant to in M.
[G4 Android Development] failax:
My backup is from 10E, are available bootloader and modem zip files from that firmware?
[G4 Android Development] Resync:
can you do a flashable *.zip collection for the V10D, like you did with 20A, too?

would be really great!
[G4 Android Development] dorantes_4:
Work on h815p?

Enviado desde mi LG-H815 mediante Tapatalk
[G4 Android Development] zurih:
Can you create & upload the 4 "flashable" zips to IMGs?

system.img, etc

Thanks in advance
[G4 Android Development] shudoha:
i have a problem i followed all instructions . now boot loop . i can make a hard reset but after 1 seconde that stop. i have not access at twrp anymore apparently . when i try to to flash a lollipop kdz .... (i know the instructions is not the first time i do this) at 9% that cut all and tell me to remove the battery , unplug and try again etc etc . impossible to roll back ... anyone have a idea . bcz its weird my lg g4 is recognized on brigde , on lg support tool .

i have h815 unlocked i tryed with windows 10 and 7 (by virtualbox with workstation) and a lot of different way . now i have not idea anymore i cant do nothing if someone now this problem and can help me because i try since 1day
[G4 Android Development] Svartsyn333:
Same here. If anybody knows a fix for this please let us know.

I downloaded the filed twice with two different devices to two different sd cards. An md5 for the files would be helpful. But I don't think they're corrupt as I can open them just fine with a zip file manager.
[G4 Android Development] redcom7:
this happens because you might wipe system firtst ...

try thi ..

1. wipe system cache data dalvik 4 pins

2. flash system.zip

3.flash bootloader (you should now not see the error message)

4.flash modem.zip

5. flash boot.zip

6. flash system.zip again ....

7. reboot system ... setup you phone

8 if you want root follow seven's root 6 topic

hope i help you...
[G4 Android Development] Svartsyn333:
Thank you but I'm not new to flashing. Of course I wiped my phone first, big wipe with everything except internal and external sd.
[G4 Android Development] Davisk8:
Hi guys anyone knows how to enter service menu?? Old lollipop code don't work.. :(
[G4 Android Development] redcom7:
that was the reason i think ... flash again system even new one
[G4 Android Development] Svartsyn333:
I'll try that way, thank you. As OP stated to flash bootloader first I of course tried it only in this order.
[G4 Android Development] *justintime*:
I have lost TWRP. And cant get it back with ADB.

It flashes the recovery and says ok. But when i boot in recovery red question mark is there.

I flashed all zips in OP.
[G4 Android Development] Illux:
How come knock code is not working? I thought this was the genuine LG files? Or did I miss something on the way?
[G4 Android Development] shudoha:
and when you try to roll back with flashtool and kdz for lollipop he told you after 9% to remove the battery ungplug phone etc etc and try again right?
[G4 Android Development] DaarkieDoo:
can we root the same way like on 5.1.1?
[G4 Android Development] shudoha:
for root the 6.0 there are a post about this on the same section
[G4 Android Development] Kickoff:
But the OP also says that you shouldn't wipe system before flashing the bootloader. This is causing the error.
[G4 Android Development] shakeyabooti:
Hey all, I have android 6 now on my LG G4 which is great so thank you all for the files but I have one problem and I wondered if anyone else has:

If I try and un-install an app my phone re-boots lol

I have the rooted kernal flashed so SU is installed, and I can get to TWRP by button meathod cos won't install on my device, it says unrecognised.

for the people having problems with the files and getting stuck "I had the same" If you can get into recovery I just flashed the rooted kernal and my phone booted with no problem.
[G4 Android Development] MetaIIica:
If you want back to 5.1 without issue do following:

You need a TWRP Backup of 5.1 and 10D Bootloader and 10D Modem Files

1. Go to TWRP

2. Restore Backup

3. flash Modem of 10D

4. Bootloader of 10D

5. reboot and enjoy

https://www.androidfilehost.com/?fid=24052804347846182

https://www.androidfilehost.com/?fid=24052804347846181

thanks to [MENTION=5776465]genesixxbf3[/MENTION] for the files
[G4 Android Development] Cozmos23:
So its better to flash only system and kernel?
[G4 Android Development] shudoha:
and when you cant go on twrp anymore? lol
[G4 Android Development] asuraaaa:
Hello,

i get android 6 by recovery custom, but i have v10e, i read in other thread:

the reason that Software versions info shown V10e is I made a dirty flash

I did flash in this order:

- Factory Reset

- LG-H81520A-Flashable.Bootloader.zip

- LG-H81520A-Flashable.Modem.zip

- LG-H81520A-Flashable.Boot.zip

- LG-H81520A-Flashable.System.zip

- BETA-SuperSU-v2.52.zip

- Root_Kernel_Android_6.0_Marshmallow_by_S3V3N.zip

When i have to do the wipes for clean install?
[G4 Android Development] MetaIIica:
You can boot in fastboot and then boot in TWRP with

fastboot boot twrp-2.8.7.0-h815.img

in this you can flash TWRP back to phone
[G4 Android Development] NOSTALGIA:
this is it.... the very first non-nexus to get the marshmallow update...
[G4 Android Development] Idol400:
what about cust partition from M ? Can You make it TWRP flashable ?
[G4 Android Development] shudoha:
no i cant i have not access at my android .. hard reset doesnt work ... download mode doesnt work .. twrp doesnt work anymore too ... i wait for a solution i search since 20hour without stop and tryed a lot of different way ... nothing work

well download mode work but impossible to rollback ...
[G4 Android Development] Rydah:
[MENTION=2684188]autoprime[/MENTION] what partition is the data partition? I looked in your directory but didn't see one clearly labeled. Thnx

Sent From My LG G4
[G4 Android Development] *justintime*:
AHHH great man... you saved my day. This way i could get Root again and safely flash TWRP.
[G4 Android Development] shudoha:
how you did justin? explain me plz bcz aparently we have the same problem ... and if you can help me

and explain me step by step plz
[G4 Android Development] autoprime:
there is no data.img... data partition on your phone is where all your app data etc is stored. data partition is what gets wiped when you do a factory reset... or a wipe in twrp.
[G4 Android Development] *justintime*:
To be clear, i was running M but i coulndnt get into TWRP. It gave me the red questionmark and had no root.

I downloaded the kernel and SuperSU here http://xdaforums.com/g4/development/repack-kernel-root-android-6-0-t3232387

And saved them on the Device

So i in ADB i did:

adb reboot bootloader

fastboot boot twrp-2.8.7.0-h815.img

TWRP starts up. Flashed SuperSU and the Root Kernel

wiped cache and dalvik.

With Flashify i flashed TWRP on the device.
[G4 Android Development] shudoha:
[MENTION=2684188]autoprime[/MENTION] maybe you can help me after made the flash . followed all your instructions ... boot loop ... hard reset doesnt work ... i have again access to dl mod ... but when i do this for rollback ... blocked at 9% and impossible to continue and nothing move on my phone that stay at 0%.... i have not access at twrp anymore . i search a solution since 1day ..... you can help me or give me a idea for this issue plz ?

---------- Post added at 07:28 PM ---------- Previous post was at 07:26 PM ----------

then is not the same problem ... hard reset doesnt work .. have not access at twrp ... boot loop all the time and dl mod work .. but i cant use the kdz method that stay at 9% on my pc and nothing and my phone ...
[G4 Android Development] Rafael Pershing:
Hi Guys,

can i just update with LG Flash tool?
[G4 Android Development] autoprime:
I'm confused... if you have an unlocked phone.. why don't you have access to twrp? none of the zips I provided replace twrp.. so if you had it to start out with... then you should still be able to boot into it.

to boot into twrp...

power off phone

hold volume down + power button (use two hands.. one for each button)

as soon as you see lg logo... let go of the power button then quickly press it again (never letting go of volume down with other hand)

keep holding until you get into the factory reset screen... then select ok to reset then yes/ok to confirm then twrp will boot.

if you tried this on a locked bootloader device without twrp... then you shouldn't have tried this. I specifically mention that in the OP.
[G4 Android Development] shudoha:
i had a unlocked bootloader with twrp installed before . i did all ... and bootloop ... now when i go in factory reset screen ... and i do 2 time the reset option i have android guy for 1 seconde my phone reboot and again lg boot loop all the time
[G4 Android Development] Rydah:
Right, just thought there was a preload area on /data

Sent From My LG G4
[G4 Android Development] autoprime:
odd. in your PM you mentioned the phone shutting off while in TWRP and you were never able to flash system. It seems that is the start of all this... since you flashed everything but twrp.. the boot.img no longer matches system. what I'm confused about is why twrp is gone. sounds like the "recovery-from-boot.p" file from your previous system install patched out twrp.

I haven't had any time this weekend to mess with Android.. so I'm not sure how to work around any of the new quirks just yet so not sure where you go from here. Ideally someone needs to figure out how to get KDZ to flash. Otherwise you might have to wait until 20A is available officially for you and you use LG Bridge to fix the phone.
[G4 Android Development] shudoha:
i just used your instructions .. in twrp flash the first good zip and after that system etc etc ... then yes its weird and apparently i'm not the only on to have this problem in another section lg g4