Develop Bugs

Issue with Unbrick guide(method)

Hi there guys searched around and relaly dont see a similiar problem I am having and any help would be appreciated. So I flashed the ics leak forthe unrooted v ersion of my att&t nitro that worked fine(its the exact same one as hono's but for unrooted roms) Anyways now that att official is coming out I wish to downgrade back to a stock rom so it will update to official. problem is during the unbrick method as its at some points in broken english(not a dis) just saying can get a bit confusing.
So I get to the step where the lg tool is updating and reboots phone and phone is back on and we are at about 93 percent that the problem occurs. the program(lg tool) says that there is a problem with the usb connection to the phone communicating please pull out usb remove battery and turn phone back on and hit restart ive tried that and still gets to same point to eventually program gives up and say exit.
ive reinstalled teh shttp server and all the tools redownloaded the linked kdz file etc...cant i just flash the official att rom since im not actually bricked. or is it better to dowgrade and redo it how i am trying to do now. Any hlep is appreciated seems as newer phones come out things get more confusing then easier

talrune said:
Hi there guys searched around and relaly dont see a similiar problem I am having and any help would be appreciated. So I flashed the ics leak forthe unrooted v ersion of my att&t nitro that worked fine(its the exact same one as hono's but for unrooted roms) Anyways now that att official is coming out I wish to downgrade back to a stock rom so it will update to official. problem is during the unbrick method as its at some points in broken english(not a dis) just saying can get a bit confusing.
So I get to the step where the lg tool is updating and reboots phone and phone is back on and we are at about 93 percent that the problem occurs. the program(lg tool) says that there is a problem with the usb connection to the phone communicating please pull out usb remove battery and turn phone back on and hit restart ive tried that and still gets to same point to eventually program gives up and say exit.
ive reinstalled teh shttp server and all the tools redownloaded the linked kdz file etc...cant i just flash the official att rom since im not actually bricked. or is it better to dowgrade and redo it how i am trying to do now. Any hlep is appreciated seems as newer phones come out things get more confusing then easier
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i recommend you to use the original data cable that came alongwith the phone package and the usb ports at the back of the pc !
do this and try again !

yeah I am using the data cable that came with it and using the usb ports on back of pc. also i assume I cannot access the adb commands via the command line if phone isnt rooted correct? because i have t ried but thats a no go but as i said i assume thats because im not rooted.

You shouldn't have any reason to downgrade. You should just be able to use the LG tool to install the new ICS version when it "officially" comes out without any fuss.
If you want to install it right away (but slightly more difficult method), then follow the unbricking guide but use the new AT&T KDZ file instead of the one listed in the guide. And stop after it flashes that because you're done.

ok i assume the new att kdz is on this forum so i will look for it and give it a go i know the link hono had up yesterday for official attv20 was dead link.

oh another question when ya luanch the R&D test tool(UpTestEX_mod2_marwin.exe ) for select type do i leave it at cdma? and for phone mode leave it in diag? or should it be in emergency or cs_emergency that is not listed in the guide

ok got it to work i had to block the 127.0.0.1 lgmobile line in host and rebooted computer and pointed model dll on the R&D tool to the one in kd folder and then used the v20 official att ics and slet it stay on korean as country but chose english as language,thanks for hte help.

Lg flash tool gives contact system administrator error

I have a lg g4. To be exact a lg h815. I am trying to update to android marshmallow with lg flash tool kdz method. As soon as it gets to actually updating the phone, it just errors out and says to contact the system administrator. I am admin of my computer. I have no clue how to fix this. I even used a different computer and it still didn't work. I would appricate any help.
Edit: i found a solition. Just use lg up and it will work.

stickguy123 said:
I have a lg g4. To be exact a lg h815. I am trying to update to android marshmallow with lg flash tool kdz method. As soon as it gets to actually updating the phone, it just errors out and says to contact the system administrator. I am admin of my computer. I have no clue how to fix this. I even used a different computer and it still didn't work. I would appricate any help.
Edit: i found a solition. Just use lg up and it will work.
Click to expand...
Click to collapse
I am facing same issue what you did?

go to http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803

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!!!

Same problem here

RsGilbert said:
Same problem here
Click to expand...
Click to collapse
Hey. I got it fixed all by myself. Whatsapp me at +2348166225097 and I will help.

I own lg g3 d855
It boot until home screen but after a while black screen and it s hard to power on it again. Then need to wait a time to boot it again.
What the problem?
---------- Post added at 06:50 PM ---------- Previous post was at 06:46 PM ----------
Amlmx said:
I own lg g3 d855
It boot until home screen but after a while black screen and it s hard to power on it again. Then need to wait a time to boot it again.
What the problem?
Click to expand...
Click to collapse
Please anyone can help me?
Thanks

Thank you Litblogger
Litblogger said:
Hey. I got it fixed all by myself. Whatsapp me at +2348166225097 and I will help.
Click to expand...
Click to collapse
My thanks to Litblogger and xda. I got it fixed with your help on whatsapp, Litblogger. My phone is currently back to stock. I couldnt thank you again because the phone is now network locked. Maybe we could speak on facebook. My user name is Gilbert R Ssenyonjo.

RsGilbert said:
My thanks to Litblogger and xda. I got it fixed with your help on whatsapp, Litblogger. My phone is currently back to stock. I couldnt thank you again because the phone is now network locked. Maybe we could speak on facebook. My user name is Gilbert R Ssenyonjo.
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Folks.
Got the same problem now (with my wife's phone). I'd appreciate it if instead of helping people privately you'd tell everyone what to do to fix the problem.

I had the same problem, downloaded .tot file via IMEI check (can't remember where from) and used that .tot file with BoardDiag, flashed everything as in tutorial (google it), it was 4.4.2 Android, couldn't update it (software is up to date) so I rooted it, flashed twrp 3.0.0 and installed Fulmics 8.0, it works now just fine

D85130g Downgrade can it be done or not

About to buy this phone and am getting mixed answers reading through the threads. Can the latest build (D85130g) be downgraded or will I get an error with the flash tool. Don't want to spend the money and be stuck on stock. I know kingo only works with earlier firmware.

Yes you Can.
billard412 said:
About to buy this phone and am getting mixed answers reading through the threads. Can the latest build (D85130g) be downgraded or will I get an error with the flash tool. Don't want to spend the money and be stuck on stock. I know kingo only works with earlier firmware.
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You can Downgrade from 30G to 10R, I did it a few times using LGUP without any problem.

PonchosoftX said:
You can Downgrade from 30G to 10R, I did it a few times using LGUP without any problem.
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THANK YOU! I've been trying to find an answer for a week.

People are moving on from this device I think.

Moon75 said:
People are moving on from this device I think.
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Obviously. It's 3 years old. That being said, some of us are broke af and are buying it for the good specs. Despite the age

It still do the job well if hardware not failing. If you root it and put new software on it work as new so its very good.

Moon75 said:
It still do the job well if hardware not failing. If you root it and put new software on it work as new so its very good.
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I actually ended up buying it after confirming it could be downgraded. Ran lineage for a few days but despite being fast, was a little buggy for me. Currently running the stock 30g rom and aside from the crappy battery life, i have no complaints. This phone was definitely advanced for its time and gives new phones a run for their money. This phone is solid. 80$ well spent imo

I've been trying for 2 days to downgrade my G3 D851 and it will not flash using LGup or LG Flash tool 2014. The process starts, but always stops due to error. LGUP always shows Unknown Device [COM41, D85130e]. Have set port to 41 and random. Can anyone offer any solutions? Have tried tot and kdz.

timnop said:
I've been trying for 2 days to downgrade my G3 D851 and it will not flash using LGup or LG Flash tool 2014. The process starts, but always stops due to error. LGUP always shows Unknown Device [COM41, D85130e]. Have set port to 41 and random. Can anyone offer any solutions? Have tried tot and kdz.
Click to expand...
Click to collapse
i believe the flash tool I'm using is from this thread(https://forum.xda-developers.com/tmobile-lg-g3/general/firmware-t-mobile-lg-g3-t2818667) under "kdz flashing method". Using a stock 30D kdz from one of these threads. I don't set the port to anything. Never fails for me. If it doesn't work I'll zip the exact one i have and upload when i get home. Where is it failing? What percentage?

Thanks. I finally succeeded with LGUP. Turned out when I downloaded and installed LGUP, it came with 8994 dll, and the D851 requires 8974 dll. It still didn't work with KDZ, but I got it to work with TOT. What a PITA!!! I don't envy anyone else trying to root D85130e without advanced knowledge. Thanks for your offer to help. Maybe this will help someone else that is having problems. The LGUP download with the 8974 dll is here. http://oceanhost.eu/545euinlq0hw/LGUP_LG_G3.zip.htm

timnop said:
Thanks. I finally succeeded with LGUP. Turned out when I downloaded and installed LGUP, it came with 8994 dll, and the D851 requires 8974 dll. It still didn't work with KDZ, but I got it to work with TOT. What a PITA!!! I don't envy anyone else trying to root D85130e without advanced knowledge. Thanks for your offer to help. Maybe this will help someone else that is having problems. The LGUP download with the 8974 dll is here. http://oceanhost.eu/545euinlq0hw/LGUP_LG_G3.zip.htm
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cool. I haven't tried a tot yet. I heard they quit working after you surpassed a certain update. No problem with KDZs here. Anyway glad to hear it worked out.

timnop said:
Thanks. I finally succeeded with LGUP. Turned out when I downloaded and installed LGUP, it came with 8994 dll, and the D851 requires 8974 dll. It still didn't work with KDZ, but I got it to work with TOT. What a PITA!!! I don't envy anyone else trying to root D85130e without advanced knowledge. Thanks for your offer to help. Maybe this will help someone else that is having problems. The LGUP download with the 8974 dll is here. http://oceanhost.eu/545euinlq0hw/LGUP_LG_G3.zip.htm
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Click to collapse
Can u link the tot you used to restore? All i found was 10c Looks like i gotta go that route. My flash tool stopped working.

Downgrade D851
billard412 said:
Can u link the tot you used to restore? All i found was 10c Looks like i gotta go that route. My flash tool stopped working.
Click to expand...
Click to collapse
This is the one I used. https://www.androidfilehost.com/?fid=23622183712473995
Good luck to you. I was able to root with stump root after flashing this.

Downgrade 7.0 to 6.0

Hello everyone, it's been many months since I'm using the official LG v29a beta ROM installed with the booloader locked with LGUP.
I would like to go back to Marshmallow how can I do? My G4 is Italian no brand.

Al3xCooki3 said:
Hello everyone, it's been many months since I'm using the official LG v29a beta ROM installed with the booloader locked with LGUP.
I would like to go back to Marshmallow how can I do? My G4 is Italian no brand.
Click to expand...
Click to collapse
Cazzo... did you try the search box?
Doesn't matter. If I already lost a minute writing that, I can also advise you...
Flash V20p.kdz with LGUP. Don't forget you need to use the right .dll for the phone to be recognized.
If you use the search box you'll find what you need.

RuedasLocas said:
Cazzo... did you try the search box?
Doesn't matter. If I already lost a minute writing that, I can also advise you...
Flash V20p.kdz with LGUP. Don't forget you need to use the right .dll for the phone to be recognized.
If you use the search box you'll find what you need.
Click to expand...
Click to collapse
Sorry but I do not sail much in this forum! How do I know which right dll to use?

Al3xCooki3 said:
Sorry but I do not sail much in this forum! How do I know which right dll to use?
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Click to collapse
I'll send you the files by PM otherwise this will become a long conversation.

RuedasLocas said:
I'll send you the files by PM otherwise this will become a long conversation.
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Click to collapse
Tank you

I have the same problem. I have updated my LG G4 to 7.0 beta. Now the problem for me is I can't able to boot into download mode it says "Your device is corrupt. It cannot be trusted and will not boot" phone is booting until lokscreen it freezes there and restart again.
My Lg G4 is from Taiwan. It doesn't allow to unlock bootloader. Any help much appriciated.

ronniem88 said:
I have the same problem. I have updated my LG G4 to 7.0 beta. Now the problem for me is I can't able to boot into download mode it says "Your device is corrupt. It cannot be trusted and will not boot" phone is booting until lokscreen it freezes there and restart again.
My Lg G4 is from Taiwan. It doesn't allow to unlock bootloader. Any help much appriciated.
Click to expand...
Click to collapse
Corrupted Bottloader is not the Thread. Power Button to Continue and Downloadmode starts!!!
for downgrade to MM use:
https://forum.xda-developers.com/showpost.php?p=73642302
Firmware is to search!!!

uweork said:
Corrupted Bottloader is not the Thread. Power Button to Continue and Downloadmode starts!!!
for downgrade to MM use:
https://forum.xda-developers.com/showpost.php?p=73642302
Firmware is to search!!!
Click to expand...
Click to collapse
Thank you for the reply but my phone is not booting in download mode at all

ronniem88 said:
Thank you for the reply but my phone is not booting in download mode at all
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Click to collapse
If you're stuck in LG logo boot up, just try to start LGUP (having the right files), connect the phone to a USB2 port and start the process.
Today, after try the RR ROM, I re-install v29a with TWRP but got stuck on the LG logo boot up, I just disconnected the phone from the computer, turned ON LGUP, connected the phone, was detected as it should and re-flash the v20p.kdz again. No problem... try it.
Can also see this: https://forum.xda-developers.com/showpost.php?p=76951541&postcount=30
Good luck.