Develop Bugs

[Q] G3 totally bricked - even no PID, IMEI, Phone Model, SWversion

Hi there
I have accidentally close the LG Flash Tool while the program is flashing my phone
And now, the phone stays in black screen and keeps in download mode
When i try to flash the phone using LG Flash Tool again with TOT/ universal DLL
It seems that the phone has lost PID, IMEI, Phone Model, SWversion information, therefore the flash will not run
I have googled for half day but can't find any answer, Pls HELP!!!
(pls forgive my english)

here is error message when using D855 DLL

rgb said:
here is error message when using D855 DLL
Click to expand...
Click to collapse
Your best bet would be to use LG software tool. You will get the rom at the factory setting and you will have to root the phone again (if you so desire). The tools and drivers can be downloaded from the link below. Once you install the tools on a PC, just plug in your phone with USB drive and follow the prompts. Here is the link for the tools:
http://www.mylgphones.com/lg-software-tools-download
Good luck!!

Nope no solution. Motherboard is corrupted. Use your warranty and get the phone RMA'd

Thanks for reply
The phone has been repaired by a professional
There is no any soldering required, and done by shorting two pins on the board, and flash with qhusb USB interface
Quiet simple way to repair
All imei/other info exists

LG G3 seems bricked, but it's recognized by computer

Hello,
My LG G3 (D855) doesn't turn on and I can't get it to boot to the recovery or download mode. However, when I plug it to my computer (windows), it's recognized as LGE AndroidNet USB Serial Port (COM9). Recently, I bought a new battery but I think that's unrelated.
Everything started when I was following the steps described on this post:
http://forum.xda-developers.com/lg-g3/help/help-secure-boot-error-trying-to-boot-t3054977
When I tried to reboot it, as the post specifies, it stopped turning on at all.
Is there something I can do so it turns on again?

Also, I can't find the tot file of the ROM I was using to try the method described in the link bellow. The ROM was a stock one, D855 20A.
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359

Unable to flash ROM due to PC not recognizing device

Hello friends!
New registered user here but have already read tons of threads regarding G3 troubleshooting. Anyway, have decided to post this problem and if a similar situation has already been posted (and solved), please provide link.
For some strange reason, my G3 have decided to stay in the LG logo (I understand that this is the so-called boot-loop). This happened when the phone suddenly restarted while watching a YT vid and the battery still at 30%++. The phone just keeps on restarting until such a time that it never got pass the LG logo.
Here are the things that I have already tried to no avail:
1. Enter Hard Reset page via hardware keys (Power + Vol Up buttons). Have chosen "Yes" to hard reset device but alas, it never got pass the LG logo.
2. Downloaded PC suite, KDZ flashtool, and LGUP. Installed all three software. Connected G3 to PC and entered download mode (Vol Down while inserting USB cable). Unfortunately, unable to fully use either of the three software since the PC cannot detect G3.
Number 2 is quite strange since I have downloaded and installed all G3 drivers. This I know since a friend of mine who owns a working G3 unit was detected by the computer and can sync with the PC suite.
For some strange reason, everytime I connect my broken G3 to the computer, it is not detected by the PC and was not even listed in the device manager.
Any help and advise would be highly appreciated
I already downloaded all necessary tools (KDZ, LGUP, and flashtool) to flash the ROM but I need the PC to see the G3 unit to be able to do so.
By the way, before the bootloop scenario: the debugging (or is it developer?) options are disabled and I'm not sure if the bootloader is locked or unlocked.
I hope all this info is of any use.
Thanks a lot in advance

Have you tried simpler solutions first? Like, trying another USB ? Or another USB port from your pc? This maybe hardware related rather than software. You should try that before anything else. (Maybe you did?)

neyvermore said:
Have you tried simpler solutions first? Like, trying another USB ? Or another USB port from your pc? This maybe hardware related rather than software. You should try that before anything else. (Maybe you did?)
Click to expand...
Click to collapse
Thanks for the reply. Yup, have done those. Tried a different cable, different USB port, and borrowed a working G3 unit. The good G3 unit was detected by the PC but when I connect my broken G3 (same cable and same USB port), the PC does not detect it (not even listed in device manager).
Because of this hurdle, I couldn't flash with LGUP (it states no handset was connected). The KDZ flashtool basically says the same message.
By the way, my debugging options are disabled before this whole problem started. Could that be a reason why the PC won't detect the unit?

LG G3 855 Imei/Baseband and QPST Problem

Hi Everyone,
I am new to this Phone had the maybe unfortunate opportunity to buy a lg g3 855. It has the Imei Null Problem and the baseband is showing as unknown. I thought well that shouldnt be to hard to fix (silly me).
Phone works fine except 2g/3g so no signals at all ofc.
Downloadmode,TWRP,Root is available. Stock Rom MM 30b.
So now the Problem, i thought i can just replace the Imei with QPST/RF_NV_Manager and in the worstcase flash the 855.qcn file from the forum. BUT
I just cant get QPST to recognize my phone. I installed all Drivers LG/LGMulti/Qualcomm/ADB, and it shows in device manager ast certain things but if i try to get them in QPST, they always show NO Phone/ NO ESN and therefore no connection possible. I flashed older and newer Stock Roms and i start to think that guy i bought the phone from had a major screwup ^^.
When I try to get into Diag Mode with the hidden menu,usb debugging and so on the phone doesnt really show up anymore. With Mtp i have 3 entrys in Device Manager(but they dont work either)
LGE Mobile ADB Interface
LGE Mobile USB Composite Device
LGE Mobile USB SerialPort
LGE Mobile USB Modem
With Load only there is none
I also dont get the option to choose Software Download option from Start clients menu when i insert the USB Cable
I Hope someone can help me i literally tried everything except wiping partitions because the tools always shutdown somehow.
Thanks for Reading and Help your Tritratrulala

tritratrulala390 said:
Hi Everyone,
I am new to this Phone had the maybe unfortunate opportunity to buy a lg g3 855. It has the Imei Null Problem and the baseband is showing as unknown. I thought well that shouldnt be to hard to fix (silly me).
Phone works fine except 2g/3g so no signals at all ofc.
Downloadmode,TWRP,Root is available. Stock Rom MM 30b.
So now the Problem, i thought i can just replace the Imei with QPST/RF_NV_Manager and in the worstcase flash the 855.qcn file from the forum. BUT
I just cant get QPST to recognize my phone. I installed all Drivers LG/LGMulti/Qualcomm/ADB, and it shows in device manager ast certain things but if i try to get them in QPST, they always show NO Phone and therefore no connection possible. I flashed older and newer Stock Roms and i start to think that guy i bought the phone from had a major screwup ^^.
When I try to get into Diag Mode with the hidden menu,usb debugging and so on the phone doesnt really show up anymore. With Mtp i have 3 entrys in Device Manager(but they dont work either)
LGE Mobile ADB Interface
LGE Mobile USB Composite Device
LGE Mobile USB SerialPort
LGE Mobile USB Modem
With Load only there is none
I also dont get the option to choose Software Download option from Start clients menu when i insert the USB Cable
I Hope someone can help me i literally tried everything except wiping partitions because the tools always shutdown somehow.
Thanks for Reading and Help your Tritratrulala
Click to expand...
Click to collapse
Everyone with the same Problem have a look in this Post Page 19
https://forum.xda-developers.com/lg-g3/general/request-3g-2g-lte-d850-t3300908/page19#post79462351

Help me unbrick my LG d722 (G3s)

https://drive.google.com/file/d/1mg8BDBCaoCS_LXE0TBSd5TdKV81YUsCM/view?usp=sharing[/IMG]
Hi guys,
i need some help unbricking my d722.
what went wrong?
I tried to flash twrp with flashify and i ended up in demigodmode.
from there i connected the phone to my computer and like 10 portable drives showed up asking to be formatted. I formatted all except one drive because it was protected from.
After i formatted the drives my phone was dead with only a black screen left.
Since i can't find any .tot firmware files for this model i tried to use the .tot firmware for a g3 in BoardDiag.
but when i want to use the extracted .tot firmware files on my phone it says this:
no response from device, check pmic first and if still boot problem replace ap
i think i have managed to install qualcomm driver and the phone is recognized as a qualcomm when plugged in.
But i did not shortwire the motherboard because i can't find the GND
can anyone please help me fix my phone thank you so much!