Phone Only boots to Download Mode

Phone Only boots to Download Mode - Verizon LG G4

in the process of flashing 13a it failed, the phone was showing com3 and i unplugged it to retry and to flash again, but now i get a driver code 10 so i cannot flash the phone with KDZ because the flash tool wont communicate with the phone, i cant even get into recovery with the button combo., and every time i reboot i boots up to download mode. any help would be gladly appreciated.

Please Close thread, User Error.

Related

[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

HELP sgh-t989d is stuck in odin update failed mode

ok so i had the latest cm13 rom on my phone partition is in ext4 had many issues with the rom so i went to flash the stock rom with odin
while the firmware was loading my usb cable failed and an error popped up saying odin process was aborted then the com port went empty (the phone disappeared) no the phone will not go into download mode while trying to get into download mode every thing looks good till you press the up button an you go to odin mode but with a message: firmware upgrade encountered an issue. please select recovery mode in kies and try again.
however my pc will not recognize my phone any more and i can not get into recovery either
in fact if i just plug the phone in it boots up to this message screen without even touching any buttons
I have tried just about everything i can think of even a unified toolkit but nothing will work as i cant access recovery or odin or kies???
I have also gone threw the forums and was not able to find anything pertaining to this directly
please help

Bricked Lenovo Vibe shot z90-7, no edl, fastboot twrp and locked bootloader.

I got a lenovo vibe shot z90-7 which was using Android 5.1. I found an upgrade rom on needrom to 6.0. I flashed it using qfil (qualcomm flashing tool) and it went all right, all functional. But I also wanted to unlock the bootloader and install a twrp (I found a procedure and twrp image on a russian forum). I followed the steps but it didn't work, I still wasn't able to unlock the bootloader. Thus, I was not able to enter fastboot anymore: from adb I was typing "adb reboot bootloader" and the device would reboot normally, not in fastboot mode. I decided to change to another rom (from needrom) which was claiming would allow you to unlock the bootloader. So, without hesitation I flashed it in qfil (edl mode) and it went all right, but I got stuck in boot loop. After the splash screen, the device shuts the screen off and does a long vibration and stays like that. If I connect it via usb to my pc I get a some "need to format drive" alerts, and in qfil I see "Qualcomm HS-USB Diagnostic 9006 (COM5)". If then I try to flash the rom I get this log:
Code:
Start Download
COM Port number:5
Switch To EDL
Download Fail:System.Exception: Failed to Switch to Emergency Download mode
at QC.QMSLPhone.Phone.QPHONEMS_SwitchToEDL()
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
Download Fail:Switch To EDL FailSystem.Exception: FireHose Fail
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
at QFIL.Tech.DownloadTech.SwitchToEDL()
Finish Download
It's seems like I need to get in Edl mode first, but I cannot use adb and pushing vol+ and plug the usb at the same time (or a little bit first one or the other, I tried all) does't do anything but booting the device normally.
I also tried getting in fastboot mode (keep vol- and power button) but it doesn't work.
I read of an "engineering mode" by keeping vol- on boot. It does something, the screen becomes black, but it's on. On my pc the adb driver comes in in the popup, like if I'm in fastboot or adb, but on "fastboot devices" I can't see anything, while on "adb devices" I see a device, which is "? unauthorized". Strange to me, I can't do much with it since it's unauthorized and the screen on the device remains black. And after a few seconds (about 30) it gets back to long vibration and screen off state.
I can get into the stock recovery by holding vol+, vol- and power, but it's a very poor recovery. All I can do is reboot, shut down, wipe data and update. I tried to use "update" and put a zip file of an official rom downloaded into the sd card and named "update.zip" as suggested by the recovery, but I get an error (with no technical information about what kind of error), so no luck with that either.
I tried to force the qualcomm driver from "Qualcomm HS-USB Diagnostic 9006 (COM5)" to "Qualcomm HS-USB QDLoader 9008 (COM5)", then tried to flash using qfil, but I still get an error, even if this time is different:
Code:
COM Port number:5
Sahara Connecting ...
Sahara Version:0
Start Sending Programmer
Download Fail:System.Exception: Unable to download Flash Programmer using Sahara Protocol
at QC.QMSLPhone.Phone.QPHONEMS_SaharaArmPrgDownload(String sFileName)
at QC.SwDownloadDLL.SwDownload.QPHONEMSSaharaDownloadArmPrg(UInt64& version, String armPrgPath)
Download Fail:Sahara FailSahara Fail
Finish Download
I finally tried to download the rom in .qsb format and get in engineering mode again, but the screen remains black and no sign of flashing possibilities.
Please help, I tried everything it came to my mind.
I also tried with miflash, but still got errors...
Thank you

Hello, did you solve the problem? i have the same as you....
regards

Hi guys.
I had the similar problem few moths ago. I tried to remember what i've done to fix it, but I don't remember all things, I hope this steps helps to find the solution.
Check this:
-Use Windows 7 (I tried with Windows 10 and always appears some errors)
-Use original miniUSB cable or good quality cables
-Install Lenovo Usb drivers
Turn ON phone and press Vol+ and Vol-, hold 3 seconds
If you cant enter Recovery mode (because is corrupt or bricked), phone will vibrate for 1-2 seconds and screen keep black. Now connect USB cable (check drivers, also if Qualcomm HS-USB QDLoader 9008 was installed)
Once you done, use QSFL or MiFlash (but not 2016 version!, never works to flash)
NOTE: I had some problems with my desktop computer with Windows 7 but no problem in laptop. So check it in more than one...
Good luck.

How I fixed this
I fixed it installing a update.zip via recovery (vol + plus vol - plus power) I found here
http://forum.xda-developers.com/android/development/vibe-shot-6-0-update-root-xposed-t3409989
This not fixed the phone , but allowed me to unlock bootloader entering in fastboot mode (vol + plus vol - plus plug usb) using this
http://lenovo-forums.ru/topic/18149-lenovo-vibe-shot-разблокировка-bootloader/
Then I was allowed to install TWRP as explained here
http://lenovo-forums.ru/topic/18150-lenovo-vibe-shot-расширенное-рекавери-twrp-by-sevenmaxs/
Then I was able to go to TWRP terminal and type
reboot edl
Phone went into downloader mode and I was able to install this rom with QFIL
http://www.needrom.com/download/lenovo-vibe-shot-android-6-0-1-1625-encn-unlocked/
and I restored NVRAM with a qcn file I found in Ebay after putting the phone in diagnostics mode. Then I changed imeid, meid and esn to the original ones I found in the box. Phone fixed.
Just note that this file was for a Z90-7 rom and it will not work with a Z40a20 rom.
Hope this helps someone.

francesco9696 said:
I got a lenovo vibe shot z90-7 which was using Android 5.1. I found an upgrade rom on needrom to 6.0. I flashed it using qfil (qualcomm flashing tool) and it went all right, all functional. But I also wanted to unlock the bootloader and install a twrp (I found a procedure and twrp image on a russian forum). I followed the steps but it didn't work, I still wasn't able to unlock the bootloader. Thus, I was not able to enter fastboot anymore: from adb I was typing "adb reboot bootloader" and the device would reboot normally, not in fastboot mode. I decided to change to another rom (from needrom) which was claiming would allow you to unlock the bootloader. So, without hesitation I flashed it in qfil (edl mode) and it went all right, but I got stuck in boot loop. After the splash screen, the device shuts the screen off and does a long vibration and stays like that. If I connect it via usb to my pc I get a some "need to format drive" alerts, and in qfil I see "Qualcomm HS-USB Diagnostic 9006 (COM5)". If then I try to flash the rom I get this log:
Code:
Start Download
COM Port number:5
Switch To EDL
Download Fail:System.Exception: Failed to Switch to Emergency Download mode
at QC.QMSLPhone.Phone.QPHONEMS_SwitchToEDL()
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
Download Fail:Switch To EDL FailSystem.Exception: FireHose Fail
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
at QFIL.Tech.DownloadTech.SwitchToEDL()
Finish Download
It's seems like I need to get in Edl mode first, but I cannot use adb and pushing vol+ and plug the usb at the same time (or a little bit first one or the other, I tried all) does't do anything but booting the device normally.
I also tried getting in fastboot mode (keep vol- and power button) but it doesn't work.
I read of an "engineering mode" by keeping vol- on boot. It does something, the screen becomes black, but it's on. On my pc the adb driver comes in in the popup, like if I'm in fastboot or adb, but on "fastboot devices" I can't see anything, while on "adb devices" I see a device, which is "? unauthorized". Strange to me, I can't do much with it since it's unauthorized and the screen on the device remains black. And after a few seconds (about 30) it gets back to long vibration and screen off state.
I can get into the stock recovery by holding vol+, vol- and power, but it's a very poor recovery. All I can do is reboot, shut down, wipe data and update. I tried to use "update" and put a zip file of an official rom downloaded into the sd card and named "update.zip" as suggested by the recovery, but I get an error (with no technical information about what kind of error), so no luck with that either.
I tried to force the qualcomm driver from "Qualcomm HS-USB Diagnostic 9006 (COM5)" to "Qualcomm HS-USB QDLoader 9008 (COM5)", then tried to flash using qfil, but I still get an error, even if this time is different:
Code:
COM Port number:5
Sahara Connecting ...
Sahara Version:0
Start Sending Programmer
Download Fail:System.Exception: Unable to download Flash Programmer using Sahara Protocol
at QC.QMSLPhone.Phone.QPHONEMS_SaharaArmPrgDownload(String sFileName)
at QC.SwDownloadDLL.SwDownload.QPHONEMSSaharaDownloadArmPrg(UInt64& version, String armPrgPath)
Download Fail:Sahara FailSahara Fail
Finish Download
I finally tried to download the rom in .qsb format and get in engineering mode again, but the screen remains black and no sign of flashing possibilities.
Please help, I tried everything it came to my mind.
I also tried with miflash, but still got errors...
Thank you
Click to expand...
Click to collapse
Hi, did you slove the problem? Same situation with me. But I managed to install twrp ( Chinese) but I can't install any rom .. After successful flashing it reboot with lenovo logo, then long vibrates.. When I connect it to PC. It show number of partition and need to format popup.. I tried different ROMs.. All via twrp. I don't use miflash or qfil.. If you have solved it please share how. Thanks.

i know how to enter in edl mode in z90-7 or z90a40
Hello
This is nisar I successfully entered in edl mode and flashed rom to know the procedure pm me on +919743392420 WhatsApp

Bricked Vibe Shot - multiple partitions in device manager - no edl
having read all the above I'd like to share small info once again, it is all about correct qualcomm drivers, you can get them from androidurdu.net, do not search on the site but click on mobile drivers then scroll down and download qualcomm usb drivers.zip . unpack and use "checked" folder within the zip, they are signed and work on any windows including 10th. You see, your brick might be having an edl times, but PC doesn't know without proper drivers installed. You might want to remove all earlier/bad driver versions, for example try sigverif command or just install below qualcomm drivers and try away.
1. connect phone with good usb cable, 2. press power button till it shuts, then release power button and press volume up and down same time and phone will enter edl mode itself almost instantly, if you had twrp installed then it'll enter there, if so run from terminal "reboot edl"; keep device manager open and comm tree will appear along.
other way is via adb reboot edl command, if fastboot doesn't work, or fastboot reboot-edl
on miflash when refreshed you see the short port name and the number like com4 or 3. now it's time to flash, but the last proven flash I did with QiFL, Miflash works as fine.
i used latest international marshmallow version. after first boot, within dev mode unlocked oem + enabled adb and connected to PC with phone turned on in order to accept handshake prompt.
unlocking bootloader is easy via adb command: adb reboot bootloader, then: adb bootloader unlock-go .
all files are available online via some russian speaking forum, you just need to install twrp, then place su.zip onto phone (I copied on internal memory), boot into twrp and flash; if clean - no errors flash then you got neatly rooted marshmallow phone.
my struggle with bricked vibe shot was worth it. earlier I noticed cpu was running high, all cores all the time. also many google apps which I wanted to eliminate for draining the battery and uploading stuff all the time.
right after flashing su.zip boot into phone and install kernel adiutor from play store, then take control of how your 8 cores behave. I discovered the minimums were set at 800+Mhz so I dropped them to 200, then below within cpu section enabled all "disabled" options for boost + enabled "ondemand" + plus few more. You got to understand the process and enjoy tuning your phone your way.
I've charged my vibe shot 3 hours ago and was randomly chatting on whatsap until now and I have 73% battery. Day before yesterday before the bricking, full charge would not last more than 3 hours, incredible battery performance thanks to "adiutor" .
One more important thing, use correct rom version for your phone because of advanced camera and specific drivers camera won't work well.
Names of files used to make my phone a super hero:
1. adb-setup-1.4.2.exe
2. Miflash_140509.exe
3. Qualcomm_USB_Drivers.7z via androidurdu.net
4. TWRP-3.0.2.0_Z90a40_by_SevenMaxs.rar - has .bat files inside; enter bootloader mode and shoot
5. UPDATE-SuperSU-v2.76-SYSTEMMODE-PRO.zip (I pay for my apps including supersu pro)
6. Z90a40_Android-L_unlock_7M.7z , or use command line via adb shell.
7. Z90a40_S363_160625_ROW_QPST.7z - latest intl Mashmallow Os , to make it more perfect download marshmallow google dialer - patched.apk.
8. QPST / QIFL , used to flash the above rom
I'm not a pro so small mistakes are acceptable, I hope.
ciao.

Hey, I have the same problem as you, trying to do the step you did, but I get stucked at the first step,
I cannot find the file UPDATE.ZIP in the page from your link....
Could you help?
Thanks
josepgb said:
I fixed it installing a update.zip via recovery (vol + plus vol - plus power) I found here
http://forum.xda-developers.com/android/development/vibe-shot-6-0-update-root-xposed-t3409989
This not fixed the phone , but allowed me to unlock bootloader entering in fastboot mode (vol + plus vol - plus plug usb) using this
http://lenovo-forums.ru/topic/18149-lenovo-vibe-shot-разблокировка-bootloader/
Then I was allowed to install TWRP as explained here
http://lenovo-forums.ru/topic/18150-lenovo-vibe-shot-расширенное-рекавери-twrp-by-sevenmaxs/
Then I was able to go to TWRP terminal and type
reboot edl
Phone went into downloader mode and I was able to install this rom with QFIL
http://www.needrom.com/download/lenovo-vibe-shot-android-6-0-1-1625-encn-unlocked/
and I restored NVRAM with a qcn file I found in Ebay after putting the phone in diagnostics mode. Then I changed imeid, meid and esn to the original ones I found in the box. Phone fixed.
Just note that this file was for a Z90-7 rom and it will not work with a Z40a20 rom.
Hope this helps someone.
Click to expand...
Click to collapse

Sorry if it's reviving the thread but i found a way to unbrick the device from this state. Not sure if will work for all models because this one was a really weird one (almost all button combinations were different than any described on the internet). So my phone was from China (Z90-7 - later it showed that it's a Z90A40 and I had to flash that firmware) with a international chinese ROM and it god badly bricked (no edl, no lenovo recovery, locked bootloader etc. etc.). Now, when holding [vol+]+[vol-]+[pwr] (usually recovery mode according to the internet) it went into the Qualcomm 9006 diagnostics mode that shows a million partitions. There was no way i could get it into edl mode but there was the so called factory mode that is accessed by holding [vol-] and plugging in the usb before it vibrates. Through this I managed to flash firmware in .qsb format from a SD card and successfully unbricked the phone that I almost threw into the bin.
1. Check if your phone has "factory mode" [vol-]+[pwr] then release [pwr] or hold [vol-] while inserting usb cable.
- make sure to try different combinations, the button combinations on my phone were much different than what I mostly found on the internet
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
2. Download Vibe Shot firmware in .qsb format (Google it, the phone will warn you if it's not the right one (A40 or -7))
3. Copy the .qsb file into SD:/sdfuse
4. Insert the SD card into the phone (maybe a restart will be needed for it to be detected, you should see a message saying "DEV: External storage" when you select sd flash)
5. Select "SD update" and follow the instructions.
I hope this helps someone who can access the factory mode. This is so easy and I couldn't believe that there is so little information on flashing it this way.
Good luck.

i wonder how do you change HS-USB Qualcomm 9006 become HS-USB Qualcomm 9008?

Download Mode bricked.

I tried the method to enter the fastboot screen, but now the phone does not turn on, pops singer continued error 1003. I wanted to install stock rom download mode but I do not turn and do not know what to do now. Help.

Can't access download mode or recovery. LGUP and LG Flash tools fail too

I was using a D850 on Fulmics 7.6. This morning, my phone crashed unexpectedly. Tried to restart it, but it will stay on for a minute, then dies again. Tried to go into recovery to reflash Fulmics but again: on for a minute, crash. Someone suggested trying Lineage OS, but that one keeps getting errors mounting the SD card and whatnot. Tried to wipe all partitions and try again, still nothing. Tried to go back to stock, successfully got into download mode and started LG Flash tools, but I get a Download Failed error. After that, download mode wouldn't work anymore. Tried using Androidbrick G3 unbrick, and was able to get Download Mode to work again (goes to the firmware update page), but still LG Flash tools failed again, and now it won't go back into Download Mode. Should I throw in the towel at this point?
When I do plug it into the computer, I do see the Download Mode screen, but then the display turns off and in my device manager, the phone is a Qualcomm hub 9008 or something like that.

Develop Bugs

welcome