LG G4 Sprint stuck in bootloop after OTA update (LS991ZVF) Marshmellow 6.0 F

[anishkhadgi4xda]

I have an LG G4 with no warranty as it was bought refurbished in Abu Dhabi. The phone was a really good one until I installed the OTA update on 5th April 2017. I had absolutely no probelms before. The next day the boot looping started and it is still there. I tried Factory Reset, Wipe Cache , they didn't work, the boot looping ensued. Then I learnt about Flashing Stock Firmware using LG Flash Tools . Downloaded all needed files and felt this would solve the problem but an error shows up during downloading Stockware Via USB.
the process of LG Flash Tool stops at 9%, 18 seconds saying

_prepareAfterDload download
00000064
:: Error ::
DoDownload Error!!!

The log txt file of the Flash Tool shows at last after recognition of device

[02:28:78] [Model Name] Binary(LGLS991), Target(LGLS991)
[02:28:94] [T000032] 4F 50 45 4E 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 8E 36 00 00 B0 AF BA B1 OPEN.....................6......
[02:28:453] [R000032] 46 41 49 4C 0A 01 00 80 00 00 00 00 00 00 00 00 00 00 00 00 20 00 00 00 00 00 00 00 B9 BE B6 B3 FAIL............................
[02:28:453] Invalid command response[02:33:484] [T000032] 45 58 45 43 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12 00 00 00 E8 D3 00 00 BA A7 BA BC EXEC............................
[02:33:500] [R000032] 46 41 49 4C 0A 01 00 80 00 00 00 00 00 00 00 00 00 00 00 00 20 00 00 00 00 00 00 00 B9 BE B6 B3 FAIL............................
[02:33:500] Invalid command response[02:33:500] ErrorType : 0x2000
[02:33:500] Port Close

[02:33:500] Error Code = 0x2000, Invalid command response[02:33:500] DoDownload() Exception
[02:33:500] Port is already closed


and this happened many times.... tried different Stock Firmwares (LS991VZ5 (base version), LS991VZ9 (marshmellow OS)) from this website "storage cow"
.
.
I had no issues with the phone whatsoever before the firmware update. Few Reports have been surfacing. How do I install the stock firmware?
Please help, big financial investment , From Developing Country
.

 

[TheMadScientist]

I have an LG G4 with no warranty as it was bought refurbished in Abu Dhabi. The phone was a really good one until I installed the OTA update on 5th April 2017. I had absolutely no probelms before. The next day the boot looping started and it is still there. I tried Factory Reset, Wipe Cache , they didn't work, the boot looping ensued. Then I learnt about Flashing Stock Firmware using LG Flash Tools . Downloaded all needed files and felt this would solve the problem but an error shows up during downloading Stockware Via USB.
the process of LG Flash Tool stops at 9%, 18 seconds saying

_prepareAfterDload download
00000064
:: Error ::
DoDownload Error!!!

The log txt file of the Flash Tool shows at last after recognition of device

[02:28:78] [Model Name] Binary(LGLS991), Target(LGLS991)
[02:28:94] [T000032] 4F 50 45 4E 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 8E 36 00 00 B0 AF BA B1 OPEN.....................6......
[02:28:453] [R000032] 46 41 49 4C 0A 01 00 80 00 00 00 00 00 00 00 00 00 00 00 00 20 00 00 00 00 00 00 00 B9 BE B6 B3 FAIL............................
[02:28:453] Invalid command response[02:33:484] [T000032] 45 58 45 43 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12 00 00 00 E8 D3 00 00 BA A7 BA BC EXEC............................
[02:33:500] [R000032] 46 41 49 4C 0A 01 00 80 00 00 00 00 00 00 00 00 00 00 00 00 20 00 00 00 00 00 00 00 B9 BE B6 B3 FAIL............................
[02:33:500] Invalid command response[02:33:500] ErrorType : 0x2000
[02:33:500] Port Close

[02:33:500] Error Code = 0x2000, Invalid command response[02:33:500] DoDownload() Exception
[02:33:500] Port is already closed


and this happened many times.... tried different Stock Firmwares (LS991VZ5 (base version), LS991VZ9 (marshmellow OS)) from this website "storage cow"
.
.
I had no issues with the phone whatsoever before the firmware update. Few Reports have been surfacing. How do I install the stock firmware?
Please help, big financial investment , From Developing Country
.

Because u can't use any firmware other than zvf u can hard brick your device. Man read please.
There's a chance of no solution for a while as there is no zvd zve or zvf .tots out yet.
Kinda out of luck
Download the update again and save to sd. recovery
Apply update from sd

 

[anishkhadgi4xda]

Thanks
But then which version would be at least required? D , E or F?
If I apply from sdcard which version should I try?

I didnt know about the issue...... one "ok" and you can lose your phone!!!!!!

 

[TheMadScientist]

Thanks
But then which version would be at least required? D , E or F?
If I apply from sdcard which version should I try?

I didnt know about the issue...... one "ok" and you can lose your phone!!!!!!

I dont know the qfuse versions of d e or f so i would start with f cause some downgrades did hard brick.

 

[leoimg.nbh]

Because u can't use any firmware other than zvf u can hard brick your device. Man read please.
There's a chance of no solution for a while as there is no zvd zve or zvf .tots out yet.
Kinda out of luck
Download the update again and save to sd. recovery
Apply update from sd

is there any update about this . How can I know if it is released?

 

[TheMadScientist]

is there any update about this . How can I know if it is released?

I dont know. I know there is a zvi now from what i understand. Look in the general section maybe a .tot or kdz for it
What is your exact case so I have an idea of whats up.

 

[TheMadScientist]

There is a zvi tot in the gen section u can use to restore stock. But once u use it u will probly never be able to downgrade again. But its there

 

[leoimg.nbh]

I have a bootloop and my lg is zvf ....
Can I use zvi.tot in my lg..
Also I can't find zvi in general section:crying::crying:

 

[TheMadScientist]

I have a bootloop and my lg is zvf ....
Can I use zvi.tot in my lg..
Also I can't find zvi in general section:crying::crying:

Yes. Lgup zvi
https://forum.xda-developers.com/sprint-g4/general/zvi-tot-available-t3683618
Just remember no dowgrade after. Zvi thats it....

 

[leoimg.nbh]

Yes. Lgup zvi
https://forum.xda-developers.com/sprint-g4/general/zvi-tot-available-t3683618
Just remember no dowgrade after. Zvi thats it....

any help please
message Error --failed previousload () ----

 

[TheMadScientist]

any help please
message Error --failed previousload () ----

Did u follow the lgup guide on the main g5 threads setup with uppercut and all?