LS990 stuck on Firmware Update screen - G3 Q&A, Help & Troubleshooting

Looked everywhere but couldn't find an answer to this problem.
My LS990 was on a MM ROM with TWRP recovery. I tried to install an app from another phone with Titanium Backup (Install App + Data) and it hung for a long time and then shut off. When I turned it on, it got to the startup animation and the froze. I removed and replaced the battery several times but always with the same result. Trying to boot into Recovery Mode got me to a blue screen, then it shut off.
I went into download mode and tried to flash LS990ZV4_04.51101 stock with LGFlashTool (which I have done before successfully). It only got to about 60% before stopping and shutting off. Now whenever I turn the phone on, after showing the LG logo it goes straight to the Firmware Update screen (without showing "download mode" first).
When I press Volume Down + Power it shows "Recovery Mode - loading..." for a couple of seconds and then shows Firmware Update.
On Device Manager the phone shows up as "LGE Mobile USB Serial port" (not AndroidNet)
When I tried flashing stock again with LG Flash Tool it gets to 38% and hangs forever. (done this several times)
I have pictures but XDA wont let me post outside links yet.
Is there anything I can do besides trying to short the pins?

I see that when I connect the phone to the PC without the battery inside it shows up as "Unknown Device".
Could I perhaps do something with that?

Related

another bricked 851

I upgraded to D85120g via the LG Mobile Support Tool but lost root. While trying to restore root access, I bricked my device. Its stuck on the opening splash screen. The power button does not appear to be active. The notification led cycles between green/blue/off.
Typing "adb reboot recovery" in a console window says, "error: device not found".
The LG Mobile Support Tool recognizes the phone and says it has Software Version: D85120G, the latest available. If I click 'Options', then 'Upgrade Recovery', it goes through the steps of verifying windows, downloading 1226.54 MBytes, software extraction, and S/W Upgrade. But it only gets 4% through the upgrade and then says, "Upgrade stopped due to an error."
Powering up the phone while pressing the volume down, releasing when the splash first shows, then holding the power button again brings up the Factory data reset. I tell it yes to erase all user data & restore default settings, then yes to start. It immediately goes to the splash screen, then then android robot appears and says erasing for about 1 second, then the splash screen again. That's the last it does.
The phone shows up as a serial port but the drive letter it was mapped to has a yellow triangle "!" in device manager and says device can't start.
Can I get my phone to work again?
Got it working!
The trick was to manually set the phone into download mode by holding the volume up with the power off, then connecting to the usb cable. Once in download mode, I started LG Mobile Support Tool, clicked Options, then Install Recovery. It went through the complete process. I lost all my data but saved the phone!
Now I need root back.

LG G3 Stuck in Factory Reset Status 2

Hello there,
Today my rom (Xenon HD) stopped working and i wanted to get my old stock rom back.
So i started to downgrade, but in the end i ended up in the Factory Reset Status 2 after it shows the boot animation of an os called "mini os".
Anybody got experience on this ?
Thanks
Baschdi
Factory Reset 2
Baschdi_ said:
Hello there,
Today my rom (Xenon HD) stopped working and i wanted to get my old stock rom back.
So i started to downgrade, but in the end i ended up in the Factory Reset Status 2 after it shows the boot animation of an os called "mini os".
Anybody got experience on this ?
Thanks
Baschdi
Click to expand...
Click to collapse
First remove your battery then insert battery dont power on mobile . holding the volume up, plug in a microUSB cable into your phone.
Make sure the USB side is already plugged into the computer
You should start to see "Download Mode" for a few seconds and then it will show "Firmware Update". You are now in Download Mode!
Open LG Flash Tool and Put your dll and tot files in and use Board DL (Very Important)
after u success
It should boot into MiniOS just hit ok. Push power button plus touch the screen where it says Normal boot+(power)
done
This is not working for me. it says waiting for connection, please help
i am frustrated !!!
likhil2k3 said:
This is not working for me. it says waiting for connection, please help
i am frustrated !!!
Click to expand...
Click to collapse
Try unplugging and plugging back in and ensure you are on PORT41 for the device driver. After you do that and in Download Mode, then unplug and replug USB.
Also do not use USB 3 and try another port if you still have issues.
Bhimani bhargav said:
First remove your battery then insert battery dont power on mobile . holding the volume up, plug in a microUSB cable into your phone.
Make sure the USB side is already plugged into the computer
You should start to see "Download Mode" for a few seconds and then it will show "Firmware Update". You are now in Download Mode!
Open LG Flash Tool and Put your dll and tot files in and use Board DL (Very Important)
after u success
It should boot into MiniOS just hit ok. Push power button plus touch the screen where it says Normal boot+(power)
done
Click to expand...
Click to collapse
I have same issue in my LG G3 D850 I have apply your procedure Thanks It works ... first time the setup screen completes but when i powered off mobile and insert the sim and then powered on its again going to miniOs again i Normal boot+(power) but now boot looping auto ... what can i do now ???
For me who had the same issue, I just rebooted the device back into download mode and the LG flashtool resumed automatically. (I did not close or stop the process from the LG flashtool when I got this message).
Once the process resumed automatically, I still got download fail.
I can see whenever the device reboots, the modem disappears from within device manager after getting to the "Factory Reset 2" screen.
Any advice?
Update: I tried about 7 times to get it flashed. I ended up just restarting the phone in normal mode and strangely voila it works perfectly. Even though the software said the flash failed, it still worked. Thanks anyway!
Bhimani bhargav said:
First remove your battery then insert battery dont power on mobile . holding the volume up, plug in a microUSB cable into your phone.
Make sure the USB side is already plugged into the computer
You should start to see "Download Mode" for a few seconds and then it will show "Firmware Update". You are now in Download Mode!
Open LG Flash Tool and Put your dll and tot files in and use Board DL (Very Important)
after u success
It should boot into MiniOS just hit ok. Push power button plus touch the screen where it says Normal boot+(power)
done
Click to expand...
Click to collapse
This worked. Tks a lot.
I just got a LG harmony and as i soon turned it on it went to factory reset status and I tried to bypass but it keeps taking me to Factory reset, I also tried the download mode which took me to firmware update for hours it has still been at 0%. Taking forever
Bhimani bhargav said:
Factory Reset 2
First remove your battery then insert battery dont power on mobile . holding the volume up, plug in a microUSB cable into your phone.
Make sure the USB side is already plugged into the computer
You should start to see "Download Mode" for a few seconds and then it will show "Firmware Update". You are now in Download Mode!
Open LG Flash Tool and Put your dll and tot files in and use Board DL (Very Important)
after u success
It should boot into MiniOS just hit ok. Push power button plus touch the screen where it says Normal boot+(power)
done
Click to expand...
Click to collapse
thank you very much ,it work succesful

Bricked my LGG3

Hello everyone,
so here's my problem:
Wednesday morning i took my phone out of my pocket and had a blackscreen. I tried to restart it and took out the batterie but i always got stuck in the LG Logo or a bootloop. Since i had TWRP and lineage OS installed, i tried to go into the twrp menu with the factory mode (power button + volume down) but after the "double yes" i always got a blackscreen.
So i went into the internet to fix it myself. I tried the "LG Flash Tool 2014" with the kdz. reset & the other Flash tool with the tot. reset. Both didnt recognize my phone. At this point, the only thing that worked was the download mode BUT not the recovery mode that usually comes after it. It just showed the download mode for some seconds and then a black screen. Later i noticed that my phone showed as a "qualcomm device" in the device manager, and the internet said that this was bad. So i used "Board diag" and "Smart boot diag" to fix it, but at the point where the device should have restarted, and the download mode should have worked WITH the recovery mode, i always ONLY had the 6 second download mode. After messing a bit with "Board Diag" i even got it to show up as LGE AndroidNet USB Serial Port in the device manager, which apparently was even more bad and only way to go back to qualcomm was to shorten the pins which i did. And it worked BUT now i was back with the qualcomm stuff.
So as you can see, i've prety much run i circles since wednesday... Iam now at a point where 3 different thingscan happen when I try to put my LG into download mode (volume up + usb cable):
1. Its recognized as a unknown device which is constantly connecting and diconnecting, so iam assuming my phone is bootlooping with a black screen.
2. The download mode icon shows on my phone and disappears after some seconds but my pc fails to recognize it.
3. Nothing happens and the screen stays black
When i only connect the usb cable, it shows a stuck charging icon for some seconds and then goes black. Connecting without a battery shows the "missing battery icon". I tried with 2 pc's, both having the LG mobile driver 4.2 and the qualcomm driver installed AND beeing in testmode. Both don't recognize the device. I also tried 2 batteries on my phone but it changes nothing.
I have a D855. And i know that my situation is pretty f*cked but maybe someone i able to help me anyway. Thanks alot.

HALP!! BLACK screen but turn off menu working??

So this is weird. I was debloating this K10 (m250f) and I suposse I accidentally deleted an important package (sadly, i dont have the list of packages I deleted).
When rebooting it starts normally on LG logo, then "android is starting , 100%, dont turn off " , and afther that, the LG logo for some good minutes, to end in a Black screen. EXCEPT, when I press the back button to turn off, the normal turn off menu appears normally (the "power off, reboot, fly mode" menu), so the phone is not "dead" .
I formatted to factory mode from the device, but nothing. Then I installed the official firmware with LG UP, resulting in success from the install, but the problem is still there , abeolutly no change.
I thought this official firmware with LG UP had to fix everything, loke, from facroty, I cant believe it still happens, the same exact thing.
so PLEASE if anyone has any ideas pleeease!!
((... its my moms phone so I really have to revive it :c))

Cannot boot into download mode

Hi everybody, yesterday I was playing with my old Galaxy A50 trying to install a custom rom unsuccessfully.
I repeated the procedure three times installing TWRP and then Havoc OS but every time I tried to reboot from TWRP to OS I was stuck at the warning screen saying that the phone bootloader was unlocked and booting into download mode to reflash TWRP was blocked as it showed "only official binaries can be installed" (yes I installed Samsung disabler but still).
Still I was able to get the phone into download mode and reinstall the stock firmware as it seemed to be the only way to install and boot TWRP.
But at 4th time repeating the process I got frustrated, shut down the computer and left the phone on the warning screen still connected to computer usb cable.
Then I got back and noticed the phone was off as the battery died.
Indeed the battery died, so I put the phone in charging and after it reached 100% I tried to boot into download mode again to reflash stock firmware.
But here's the strange thing, I cannot boot into download mode anymore as pressing vol up+vol down while connecting usb cable, shows the lightning charge logo for 5 secs and then reboots infinitely with the same pattern.
If I force reboot by pressing vol down+power it shows the Samsung logo with the warning below it, then skips to another screen with another warning suggesting to press power button to continue (which does nothing) and after a while reboots to samsung logo.
So it doesn't seem it is bricked, it looks more like a battery controller fault, so I tried to detach the battery flex from the board, hoping it would reset the controller but it's still the same.
Also I tried with the flex detached and still no download mode is possible.
Was the download mode somehow erased? (if it's even possible considering it's the motherboard firmware)
If you need photos, videos or even a call on zoom, Skype, webex I would be glad to show you
same i got the same problem i can't find nothing for this when i press volume up and down and put the otg cable its simply charges but it gets stuck on the logo image there's no way to fix this but the only way is to open the phone,change the emmc and put one from samsung,close the phone flash a custom rom and you are done.
If you can enter recovery, do it. As soon as your phone gets into it, select the power off variant and then try to enter the download mode.
It seems like you did not unlock the bootloader, did you?
The bootloader Is unlocked i can't enter in the recovery because the phone locks on charging logo and its fully charged but when i try without charger It doesn't start.

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