Develop Bugs

[HELP] - Soft Bricked G3 D852 (Rogers) - No Download Mode. Stuck at FW Update Screen

Hello all,
I've done a lot of googling and searching on these forums and I'm having no luck. Hopefully by asking I can get some headway.
I was attempting to restore to stock rom. At 17% of the process using LGFlashTool 1.8.6 the tool gave me an error 'Unable to Communicate with phone' after about 10 minutes of no progress. I exited the LGFlashTool program and ran it again and now it fails saying 'Cant' change to download mode". If I turn the phone off and then press Vol+ and plug in my cable it just goes to the Firmware Update screen. My phone *IS* detected properly in the device manager as LGE Andriod MTP Device and under ports as LGE Mobile USB Serial Port (COM41). If I go into recovery (Vol- and power) it asks if I want to do the restore - but it doesn't actually do anything once I say yes twice. Just sits at the firmware update screen at 0%.
I looked at this post (http://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-qhsusbbulk-qualcomm-9008-t3072091) but it appears to be either for a different phone or different problem (showing in device manager as a bulk device - mine is not doing that). Frankly I don't want to make things worse (if that's possible)
Does anyone have a way that I can restore the download mode for this D852 phone? I'm hoping if I can get download mode to work again I can reflash the stock rom. I don't care about the data on the phone at this point.
I'm willing to send some $$$ via paypal to whomever can get me back up and running! Thanks

Valgore said:
Hello all,
I've done a lot of googling and searching on these forums and I'm having no luck. Hopefully by asking I can get some headway.
I was attempting to restore to stock rom. At 17% of the process using LGFlashTool 1.8.6 the tool gave me an error 'Unable to Communicate with phone' after about 10 minutes of no progress. I exited the LGFlashTool program and ran it again and now it fails saying 'Cant' change to download mode". If I turn the phone off and then press Vol+ and plug in my cable it just goes to the Firmware Update screen. My phone *IS* detected properly in the device manager as LGE Andriod MTP Device and under ports as LGE Mobile USB Serial Port (COM41). If I go into recovery (Vol- and power) it asks if I want to do the restore - but it doesn't actually do anything once I say yes twice. Just sits at the firmware update screen at 0%.
I looked at this post (http://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-qhsusbbulk-qualcomm-9008-t3072091) but it appears to be either for a different phone or different problem (showing in device manager as a bulk device - mine is not doing that). Frankly I don't want to make things worse (if that's possible)
Does anyone have a way that I can restore the download mode for this D852 phone? I'm hoping if I can get download mode to work again I can reflash the stock rom. I don't care about the data on the phone at this point.
I'm willing to send some $$$ via paypal to whomever can get me back up and running! Thanks
Click to expand...
Click to collapse
What happens when u just power up the phone ?

Thanks for the reply.
If I shut the phone down (by pulling battery) then plug it back in and just power it on, I get the LG logo then it goes to the firmware update screen with 'USER B84" in the box below the progress bar. Progress bar never moves. I get to this screen whether I start it in recovery (which is just the factory recov - looks like during the initial 17% it wiped out my TWRP), attempt to start it in download mode (I do not get the download mode screen with the blue dots anymore), or regularly by just holding the power button.

ok
Dont plug it into the computer and try to power it up what does ot do?

Same thing.

read this
http://forum.xda-developers.com/lg-g3/help/lg-g3-bricked-tried-everything-experts-t2852962 this might help

pacods61 said:
http://forum.xda-developers.com/lg-g3/help/lg-g3-bricked-tried-everything-experts-t2852962 this might help
Click to expand...
Click to collapse
Ok that didn't work for me but I did try the LGFlashTool using Board DL instead of Upgrade DL and it was moving a bit. Finally got to 10% and failed at 574 sec with the error "We can't communicate with Phone". I am using the cable that came with the phone. It isn't damaged or anything.
Here's what is shows in the LG Flashtool window (this is port 1 (com41)
Code:
PID: BS09S150309001007
IMEI: <myimei>
Model: D852
DLL: D852
BIN: <correct bin file from stock roms>
SWV: LGD852AT-01-V20C-302-720-FEB-04-(cuts off here can't read rest)
SWOV: LGD852AT-00-V20C-RGS-CA-FEB-04(cuts off here can't read rest)
Initializing
USB Connection Established
Start Download
LAF: Bin_User_Mode
PRIMARYGPT
MODEM
LAF:Bin_User_Mode
PRIMARYGPT
LAF:Bin_User_Mode
PRIMARYGPT
MODEM
[14: 7:28) We can't communicate with phone
00000064
On the phone it shows COM41 under the usb icon on under firmware update and 0% progress. In the box below it says:
Code:
F USER 50.0 A50.0 B70 UHS
S U LG-D852 04.4.2 Hrev_10
D85210b
D85210b
That's it. Should I leave the phone connected at this point or unplug it? Device still shown in device manager (have had it up beside the LG Flashtool window the whole time. I do see it refresh from time to time but the contents dont' seem to change at all.

Ok so I left this over night and when I checked the phone this morning it's different but I don't think it's good.
Looks like it proceeded but ended with:
FBOOT Check
FBOOT Complete Time [0s ] 1th try
Factory Reset Flag = 2
Factory Reset Flag Check Fail!!!
And my phone has a blue screen with Factory Reset Status and a big red '2'
Now what do I do?

Some further information.
If I run the LGFlashTool in Board DL action mode, it seems like the process works but I end up with the red 2 on the screen. But I don't get 'can't change to download mode' or 'cannot communicate with phone' errors.
However if I choose Upgrade DL action mode, then I get 'can't change to download mode' or cannot communicate with phone'. ARGH. What gives?
I have tried things like fresh restarts (restarting PC), restarting the LG FlashTool between attempts, not restarting flashtool, etc. I can't seem to find the sweet spot.

here
http://forum.xda-developers.com/sprint-lg-g3/help/fix-bricked-lg-g3-ls990-stuck-fastboot-t3084562 another tutorial to try

Thanks, but no dice.
I don't get fastboot options, and if i download and attempt to use fastboot, it shows no devices.
Also, when following the steps for the BOARD DL option in the lg flashtool, it goes through the process but I get no ATT screen. Nor do I get the option to tap OK or Normal - as soon as my device reboots after the flash, it gives me a MINI OS (iirc) screen with a bunch of vertical bars below it moving up and down then it changes to the Factory Reset screen with the number 2.

last one lol
http://androidforums.com/threads/ho...-2-lg-g3-d855-twn-32-gb-problem-fixed.911271/ i found one more that could help it said to use a jdz not a tot hope it helps if not sry

Thanks - I'm going to give this a try, however I can't finda .kdz file for my phone (canada/rogers D852 LG G3) - the links in that post that link to firmware is for a tot file. Does anyone have a link to the KDZ?

Hi, I'm having the exact same problem now, where the phone only boots to the Firmware Update screen. Did you manage to fix it?

Indeed.
I used the KDZ method pacods61 posted last, but I had trouble actually finding kdz firmware. With some help I finally managed to do so from here: http://devtester.ro/projects/lg-firmwares/country.php?country=Canada
Direct link for D852 Rogers Lolipop 5.0.1: http://csmgdl.lgmobile.com/dn/downloader.dev?fileKey=FWF448V332CPAKX8CEA4UCE/D85220g_00_1205.kdz

LG G3 D850AT Bricked and Reset but continues to become bricked

I was trying to install TWRP on my LG G3 (D850) and somehow got it so it would only show up as a Qualcomm HS-USB QDLoader9008 Device on my pc with no screen on and no way to get to any DL Mode.
I followed the directions from http://lgg3root.com/lg-g3-root/how-to-unrootunbrick-lg-g3/ and used the LG Smart Boot Diagnosis Tool (1.3.1) to get it back to be able to boot but as soon as I run the LG Flash Tool again and it resets I'm back to the no screen and only being identified as a "Qualcomm HS-USB QDLoader9008 " device via USB. I have done this 3 times now and still getting the same result. I rerun the Anti RollBack software and then try to flash again but it always does the same thing.
Is there something I am missing?
Thanks

D855 Kernel or TZ Crash - can't flash any kdz

Hello,
I have a LG G3 D855 EUROPE. I can't flash any KDZ or TOT File, try with LG UP, LG Flash Tool, and LG Flash Tools 2014 and other.
On download mode, when flashing, the phone reboot and software lost connection to phone (when writing system).
The only way for me, is to reboot phone on Qualcomm HS-USB QDLoader 9008 and flash all partition with BoardDiag.
Writing all partition, even system and userdata. Then the phone can boot with KitKat stock rom. But when the phone boot correctly, the phone will reboot after 2 minute sometime, sometime 1 hours etc ... With green screen TZ Crash, or Black screen Kernel crash ... not always the same error.
BoardDiag emmc test report No error.
I think there is a hardware problem ? But how to debug ? Can it be only the connector charge ? Or is a motheboard problem ? (emmc or dram ?)
Is there a way to use SDCard for system ?
Thank you

sanjayrup said:
Hello,
I have a LG G3 D855 EUROPE. I can't flash any KDZ or TOT File, try with LG UP, LG Flash Tool, and LG Flash Tools 2014 and other.
On download mode, when flashing, the phone reboot and software lost connection to phone (when writing system).
The only way for me, is to reboot phone on Qualcomm HS-USB QDLoader 9008 and flash all partition with BoardDiag.
Writing all partition, even system and userdata. Then the phone can boot with KitKat stock rom. But when the phone boot correctly, the phone will reboot after 2 minute sometime, sometime 1 hours etc ... With green screen TZ Crash, or Black screen Kernel crash ... not always the same error.
BoardDiag emmc test report No error.
I think there is a hardware problem ? But how to debug ? Can it be only the connector charge ? Or is a motheboard problem ? (emmc or dram ?)
Is there a way to use SDCard for system ?
Thank you
Click to expand...
Click to collapse
Try formatting your LG G3
Power button + volume down (like when you go to TWRT recovery)and a dialog will appear "Factory reset" (or something like that).
Greetings.

Sotiris02 said:
Try formatting your LG G3
Power button + volume down (like when you go to TWRT recovery)and a dialog will appear "Factory reset" (or something like that).
Greetings.
Click to expand...
Click to collapse
Thx for reply. Already done. Wipe data do nothing. Kdz alway with error. Only boardiag can write image partition without error. But bootloop. I try to flash another tot file LGD855AT-00-V10b-HKG-16G (no europe) with boardiag. But after flashing, the phone have black screen, can't boot. Download mode and recovery is working fine.
I realy think there is a hardware problem

Battery give 3.7 Volts. When charge > 70%, the battery gave 3.8 Volts and the phone can boot with charger.
I think there is a problem with battery. With 2 amper charger, and a full charge 100%, i can boot the phone with charger plugins. I will order a new battery.

sanjayrup said:
Battery give 3.7 Volts. When charge > 70%, the battery gave 3.8 Volts and the phone can boot with charger.
I think there is a problem with battery. With 2 amper charger, and a full charge 100%, i can boot the phone with charger plugins. I will order a new battery.
Click to expand...
Click to collapse
Yes change your battery(had the same problem with it).
You only want to flash KitKat or i doesn't matter?
Well here you can have Marshmallow one.

Sotiris02 said:
Yes change your battery(had the same problem with it).
You only want to flash KitKat or i doesn't matter?
Well here you can have Marshmallow one.
Click to expand...
Click to collapse
already try 30B (MM), 20A (Lollipop) and multiple 10 (kitkat) 10e 10f 10a. With LGUP, LG Flash Tool 1.8, LG Flashtool 2014.
ALL TOT, and KDZ give an error "lost connection" because phone is shuting down, or reboot (battery default) during process.
Only when phone is on Qualcomm HS-USB QDLoader 9008 i can fly partition with BoardDiag (because Qualcomm HS-USB QDLoader 9008 not using battery)
i have order a new battery

LG G3 D858 stuck in Download Mode

Hi guys, I have a LG G3 (D858) that recently died and can only boot into Download Mode. I never root or modified any of my phone's hardware.
I have been using a Win10 (x64) computer, not sure if this would make any difference.
I have read numerous articles about un-bricking the device but I keep on getting stuck with LG FlashTool (v1.8.1.1023).
I have gone through the BoardDiag process, pass for both AP and EMMC. When I get to the LG FlashTool, I select the right tot and the LGUP8974.dll (the one available here on this forum), then the process will start for a few seconds and return with the "Download FAIL!!" message.
The 'log' below the red warning message says :
PID: NULL
IMEI: NULL
CrossDL [] to [D858HK]. SWversion[]
00000064
I would appreciate if any of you could help me out, thank you !

You have exact problem like me and even the device model. Try using LG flash tool 2014. I stuck several times using this tool yet i continue flashing using different kdz. Now it stuck with bootloop and i don't know what else to do. Only have download mode. Who know maybe you have luck unbrick your device

Lg g3 stuck

i was using LinageOs rom i don't know exact version and was using with twrp...
i had to give phone to someone so i tried factory reset but it was not resetting so i used something from twrp to reset it i dont remember exactly what..
after that boom
now when i turn on my phone it shows "secure booting error cause boot certification verify"'... and after that screen goes black and led blinks for red and blue.. i tried alot but no download or any other mode..
after that i try volume + button and plug usb so i see that it goes to some mode but still black screen... i tried to install drivers and everything and changed port to com41 also .. when i am using flashtool its not going after ready anywhere.. and in lgup its showing unknown model.. please tell me how can i fix it.. i used flashtool 2014 also but solution not work...

While far too late for the original poster, for anybody who comes here: I had the red/blue flashing problem and error message. After a lot of messing around with TWRP (my USB port was flaky) I had the port resoldered and found, as others have reported, that the only solution - but one that worked very quickly and smoothly - was to use LG FlashTool to flash a stock ROM in KDZ format. A way that somebody found solved the red/blue flashing was reported in another thread; I didn't find it until too late, so don't know if it would have worked.
A problem with LGUP and FlashTool is that it is sometimes distributed with the wrong DLL file. For anybody who gets "UNKNOWN" device with LGUP for the LG G3, I found that LGUP for the G3 is often distributed with the wrong DLL file. See the details here, post #11. After installing LGUP, make sure that the "model" subdirectory in the LGUP program directory is the same number as the processor in your phone, in my case c:\Program Files (x86)\LG Electronics\LGUP\model\8974 (was 8994 with the "LGUP for G3" I downloaded).
HTH