Develop Bugs

Understanding the correct KDZ file, help!

Hi,
I purchased the phone in the UK from the network carrier Vodafone. I have done a fair bit of research on the rooting and unrooting process mainly via videos and reading tutorials on XDA.
I would like to root the phone and gain super user access and install some Xposed modules but would also like to be able to unroot and flash back to a stock Vodafone firmware encase I need to claim under warranty. I have been trolling the internet to get the correct KDZ file and found this site (ttp://devtester.ro/projects/lg-firmwares/country.php?country=United+Kingdom). I believe that the correct firmware may be on here but am a little confused on what the suffix and software version means to be honest.
The reason for my confusion is that I updated the firmware to 6.0 Marshmallow through the LG bridge but when I now check my phones software version it states v20b-234-15. I assume this is right but from memory the first software version when I got the phone was something like H81510B_00.
I cant remember exactly what it was before unfortunately but the KDZ files I have found state H81510C_00 (Suffix - AVDFVK) and H81510C_00 (AVDFLR) and this does seem to make sense but I'm thinking it was B instead of C but and not 100% on that.
Do you think these KDZ files would be the correct one to flash back to encase I run in to some problems rooting?
I am also assuming that this KDZ is Android Lollipop and not Marshmallow so is it OK to use this to revert back from Marshmallow?
Thanks and any help would be much appreciated.
Ross

The 10X version are all Lollipop, 20X is marshmallow.
When flashing a KDZ on your phone, what's important is what model your phone is. H815 in your case.
If you want to restore to stock in case something goes wrong, you can find everything here: http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
In there is a link to this directory: http://storagecow.eu/index.php?dir=Xda/LG+G4/ where you find pretty much all KDZ files for G4 phones.
I'm not that experienced myself, but I rooted my phone just recently and I can share my experience with you.
I have a H815. It was a V10c-TWN-XX version (Taiwan). I updated to Marshmallow with LG Bridge also and the new software version was V20b-TWN-XX.
Marshmallow rooting is not possible on my phone because I can't unlock the bootloader on it. And Marshmallow rooting is only possible with an unlocked bootloader. Unlocking the bootloader is only possible on European phones (http://developer.lge.com/resource/mobile/RetrieveBootloader.dev?categoryTypeCode=ANRS). I asked autoprime (renown user and developer here) if I can unlock bootloader after flashing an European KDZ on it. He said no, having European software on it is not enough, it has to be a phone manufactured for the european market. Dont know why, guess because of different hardware.
So, not being able to root MM, I had to revert back to stock (downgrade) using one of the KDZs.
I chose the most recent one in the directory I linked (which is the Poland H81510E). In the "Go Back to Stock" thread I linked the OP says to use LG Flash Tool 2014, which unfortunately doesn't work with Marshmallow. But fret not, it works with LG UP! http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
When I tried flashing the KDZ with Flash Tool 2014, the process failed with an error at 5%. It worked flawlessly with LG UP. Here's more information regarding downgrading, but it really isnt hard. Just download + install LG UP. Launch it. Connect your phone. Choose KDZ file. Select option "upgrade". Hit start.
NOTE: after the firmware update was done, the phone rebooted automatically and for me it stuck at at the LG Logo (bootloop). But a simple hard factory reset did it, the phone booted and my new version was 10e-something. With Lollipop 5.1 of course.
After that, I rooted my phone using this pre-rooted image: http://forum.xda-developers.com/g4/development/h815-eu-l-p-t-sea-twn-t3176195
and this guide: http://forum.xda-developers.com/g4/...-tmo-vzw-intl-variants-soon-root-lg-t3164765/
I now have a "H81510e-EUR-XX" Lollipop 5.1 with root (SuperSU 2.49).
I don't really know about Vodafone and if carrier specific firmware is necessary in this case. If not, you could use any 815 firmware.
From the site you have linked with the KDZ files..... it seems they are all the same.
If you check the table for H815 KDZs from Vodafone, there are some 10C and 10D versions. Now I compared the fileKey parameter in the URL to the 10C files and the 10D files and also the bytes of the files.
All the 10C version are identical to each other, same for 10D.
Check out this screenshot I made for you: http://i.imgur.com/Ie0w4us.png
Bytes are also identical, so it's pretty safe to say those are the same files.
Dont know why they are listed several times there. The suffix doesnt matter.
I'd grab a 10D if I were you. But I think the Poland 10E should work, too. Better confirm it with somebody else though.
If you flash your system to 10e, you can use the pre-rooted image I used. Otherwise you will have to inject root yourself: http://forum.xda-developers.com/g4/general/lg-g4-100-root-success-directives-root-t3180586. In this method you create an image of your system and inject root into the image, which you then flash back on your phone.

Can't find matched cust for NT-code

Okay, a brief history.
I have an h818p, bought here in the Philippines. I wanted MM and it was taking a while to roll out here so I used the LGUP method and flashed a Russian 20c kdz into my phone. It ran okay but had some trouble with data connections.
I finally had some time to see if I can fix it so I decided to run the 20D euro into the phone and got some error so I ended up doing a factory reset. My data works perfectly now and everything is up, the only problem I have is that every single time I boot my phone I get this error.
I tried looking as to its meaning and I think it has something to do with the wrong kernel being in my phone or something like that.
Now if anyone can please help me, find a solution. I originally wanted to flash a kdz from the Philippines but the only one I could find was 10l. Now that the errors been popping up I cant get my LGUP to read my phone properly (it wont even let me set a kdz, its asking me to find a .tot file)
Now Im wondering if I can use the LG Flash Tool to flash the 10l philippine version and if this will help. I dont want to experiment anymore only to brick my phone.

Help save a bricked lg g3

:crying:
My issues is quite complicated. Please be patient and read on.
Less than a week ago, I bought an LG G3 D855. It wasn't brand new and definitely out of warranty.
It was on the 4.4.2 Os version but I couldn't update it because I couldn't locate the UPDATE CENTER and after some research online, I found out it was because it was rooted. I couldn't find a Supersu application anywhere on the phone anyways but Root checker confirmed that it was rooted.
I downloaded the stock kitkat firmware in a .tot format and I tried flashing using LG Flash Tool for TOT but it failed because "Device version is different"
I checked the Imei online and it stated that the device is a Sprint LS990 but the details embedded in the phone all say it is D855
I checked online and found a couple of posts about this error and one user said he was able to fix it by flashing the actual Sprint .tot with the lg flash tool. I tried that but it didn't work. It still said "Device version is different. Check BIN or dll"
I checked online and found results pointing to a generic .dll file for G3s and I downloaded it but when I used it on the Flash tool, it resulted to an error "CrossDL blah blah"
So I found a Marshmallow kdz file. LGUP won't see my device model so I was able to flash it after editting the software in my build.prop to D85510n.
***I have always changed the port to COM41 in all the steps I used
The LG UP detected my model and it flashed to 100% but got stuck on a bootloop by loading the lg screen, freezing and restarting by it self. It never gets to the homescreen.
I downloaded lollipop kdz reflashed using LGUP in a form of downgrade and it got to 100% and got stuck at the lg screen while trying to reboot.
I redownloaded the stock kitkat rom and used the Lg flash tool but it failed. It said 'PID null IMEI Null"
I used LGUP to reflashed. It came to my understanding that the LGUP can flash both kdz and tot. So it flashed to 100% but got stuck at the lg screen and I have tried all I can but it is stuck. It can go into download tho. I don't know what to do about the IMEI. I don't know if the last flash retrieved it. I don't kniw what to do.
It no longer shows as LGE AndroidNet USB Serial
Please can anyone help me?
I just need my phone to work again. I was stubborn and now I regret it. I should have just stuck to kitkat. I'm so desperate to get my phone working that I wouldn't mind Android Froyo Os if it was ever possible.
PLEASE HELP!!!

I think you have to repair the IMEI...
maybe this can help
https://youtu.be/nwzgs1Cmr9k
Sent from my LG-D855 using XDA Free mobile app

I think that he forgot to hard reset after flashing the kdz.

i completly know what you should do:
1: force your phone into qualcomm 9008 mod.
2: use board diag unbrick instruction and it will boot on download mod. for unbrick you will need best kitkat tot for your G3 model.
3: flash best lollipop or kitkat tot to make your phone alive
and then flash it with any kdz you want(it should be for your G3 model)
my telegram ID : @Erfan_rv

pls help me
Apparently, it seems my bricked phone keeps disconnecting during flashing process. I dont think it the fault of the cable because I have used different ones and they all seem to work fine with other phones. I have tried a different computer and still the same results. it connects as qualcom 9008 but once I try to start flashing, it disconnects and interrupts the flashing process. my phone just shows a grey screen now when I power it up with the battery in. also, I was trying to upgrade from linear os to the latest linear os. I cant fine the tot out there so im using zv6 currently. could this also be the problem? thanks in advance

Downgrading K428 (T-Mobile) to Root it

There is good information on this forum on how to root your k428 (https://forum.xda-developers.com/lg-k10/development/root-twrp-rom-t-mobile-k428-k10-t3582493)
This however, is not possible on anything later than the 10f(?) firmware, due to there being a December 15, 2016 security update.
Firmwares I am pulling from: https://lg-firmwares.com/lg-k428sg-firmwares/
My K10 is on the most recent update 20h(?), the only thing I've done is unlock the bootloader. I'm trying to get it down to an earlier firmware version to be able to root. I have tried:
Uppercut with LGUP:
There are two separate errors I get with this. One is when I select refurbish and it gets to about 4% (On LGUP, not the phone) and it says my ".kdz does not allow refurbishing" or something along those lines.
I have tried update as well, and I get an error at 14%(on LGUP, 10% on device) and I get "invalid command response code" (image attached)
I have tried both of these options with 3 different .kdz files, so the problems aren't just unique to one file.
LG Flash Tool 2014:
When I start there is an error saying no connection to the server and no progress indicated on the phone or computer, even after maybe 1/2 hour.
After LGUP, I do have to bring my phone back with LG Bridge Update Error Recovery, but interestingly no data is lost at all so clearly my phone is not being wiped at all.
How have people successfully downgraded their k428 and how do I?
Also, is the k428 the same as the k428sg? I can't seem to figure this out and the firmwares website has slightly different specs.
I have another phone, just really hoping to switch to this one is it seems quicker, isn't running Touchwiz, has a decent camera, more storage... I won't be switching if I can't get this rooted because I have been spoiled by rooted devices.

der_cobester said:
There are two separate errors I get with this. One is when I select refurbish and it gets to about 4% (On LGUP, not the phone) and it says my ".kdz does not allow refurbishing" or something along those lines.
I have tried update as well, and I get an error at 14%(on LGUP, 10% on device) and I get "invalid command response code" (image attached)
I have tried both of these options with 3 different .kdz files, so the problems aren't just unique to one file.
[...]
After LGUP, I do have to bring my phone back with LG Bridge Update Error Recovery, but interestingly no data is lost at all so clearly my phone is not being wiped at all.
[...]
Also, is the k428 the same as the k428sg? I can't seem to figure this out and the firmwares website has slightly different specs.
I have another phone, just really hoping to switch to this one is it seems quicker, isn't running Touchwiz, has a decent camera, more storage... I won't be switching if I can't get this rooted because I have been spoiled by rooted devices.
Click to expand...
Click to collapse
Having very similar issues, at the moment stuck in a "Firmware update" loop with a T-Mobile K10 K428, after trying to downgrade from 7.0 to 6.0.1.
How are you reverting it to useable form with the LG Bridge app?
It only tells me I have the latest update then goes away.
[nevermind, this part worked]
Managed to bring the device back to functional 7.0 state, but have found no way to downgrade back to 6.0.1.. the regret I feel for allowing the update to happen before rooting the device is indescribable in frikkin words.

Hopefully someone somewhere is working on the root of this computer in Android 7.0, I have 3 of these and I need to do the root to unlock them

last Friday I could downgrade a version 10R to 10G and rooted .
but since yesterday I'm with another to downgrade but am getting error while modem part flashing .
version was 20H , I noticed once upon 20 no possible to back In 10 .

psytr0nic said:
last Friday I could downgrade a version 10R to 10G and rooted .
but since yesterday I'm with another to downgrade but am getting error while modem part flashing .
version was 20H , I noticed once upon 20 no possible to back In 10 .
Click to expand...
Click to collapse
i have been trying to make nougat downgrade to marshmallow for months. still no results. most i get is phone simply not booting OS.

SO,there is no way to downgrade from 20g?
what about about using special tools like Octoplus Box andZ3X Box?
anyone tried?
---------- Post added at 07:54 PM ---------- Previous post was at 07:53 PM ----------
SO,there is no way to downgrade from 20g?
what about about using special tools like Octoplus Box andZ3X Box?
anyone tried?

Worked Fine, min was a K428 with build number MMB29M, sec patch 2016-08-01
I did it as its posted step by step.
Nice Job!

LGUP: check crossdl fail

anyone know what this means? I tried searching everywhere to understand why this error even comes up but I can't find anything.
Years ago I flashed over a canadian kdz firmware on my lg g7 to get android 10. Now I want to flash it back to the original version that had android 9 but I keep getting this error.