Lg LS755 Stuck on Lg Logo - GSM-Forum

ghostrus · 11-08-2017, 23:47

I have an LG LS755 From Boost Mobile. I flashed it with firmware with its own version and type firmware and now all i see is LG logo and nothing else happens until the battery is drained. I cannot get it into download mode nor factory mode any more. Any help will be greatly appreciated. Its not my phone , it is a customer's i am just buying time and hoping for a solution without jtag.

Andosonson · 11-09-2017, 02:11

Quote:

Originally Posted by ghostrus

I have an LG LS755 From Boost Mobile. I flashed it with firmware with its own version and type firmware and now all i see is LG logo and nothing else happens until the battery is drained. I cannot get it into download mode nor factory mode any more. Any help will be greatly appreciated. Its not my phone , it is a customer's i am just buying time and hoping for a solution without jtag.

Bootlaoder damage by flashing previous firmware (Downgrade)
Follow this tutorial step by step then your problem will solve
https://forum.xda-developers.com/and...overy-t3060184

Or this

Tool Studio eMMC Download Tool: Flash and Unbrick All Qualcomm Android Devices | ArykTECH

Mine was not solve because the phone cannot go to Qualcomm mode... I hope your's solve

ghostrus · 12-01-2017, 18:25

I tried all possible methods listed and quite frankly, none of them works on this Lg LS755. I played around until i got it into download mode. I have no working flash files for this phone. I was hoping to get some help from Mr. Blang or some other expert here, but no one seems interested but you

Quote:

Originally Posted by Andosonson

Bootlaoder damage by flashing previous firmware (Downgrade)
Follow this tutorial step by step then your problem will solve
https://forum.xda-developers.com/and...overy-t3060184

Or this

Tool Studio eMMC Download Tool: Flash and Unbrick All Qualcomm Android Devices | ArykTECH

Mine was not solve because the phone cannot go to Qualcomm mode... I hope your's solve

andrew_tm · 12-02-2017, 21:14

Try with eMMC adapter + Easy Jtag.

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ghostrus · 12-05-2017, 12:58

Will try Andrew thanks!

ghostrus · 12-05-2017, 13:28

I got the phone to work as normal, but there is a problem with the unlock, here is the log:
LG 2-3G Tool v9.43
supported models: 1543

Phone mode is DOWNLOAD
Start new sprint unlock...
Laf Protocol: 01000004
Model name: LGLS755
Software verion: LS755ZV9
Android verion: 6.0.1
Target operator: SPR
Target country: US
IMEI1: xxxxxxxxxxxxxxx
IMEI2: xxxxxxxxxxxxxxx
Init EXT4 /system ...
Detecting sprint type ... using old write method...
Laf flash error: command error
Elapsed: 29 secs. --> (v9.43)

andrew_tm · 12-05-2017, 13:31

Quote:

Originally Posted by ghostrus

I got the phone to work as normal, but there is a problem with the unlock, here is the log:
LG 2-3G Tool v9.43
supported models: 1543

Phone mode is DOWNLOAD
Start new sprint unlock...
Laf Protocol: 01000004
Model name: LGLS755
Software verion: LS755ZV9
Android verion: 6.0.1
Target operator: SPR
Target country: US
IMEI1: xxxxxxxxxxxxxxx
IMEI2: xxxxxxxxxxxxxxx
Init EXT4 /system ...
Detecting sprint type ... using old write method...
Laf flash error: command error
Elapsed: 29 secs. --> (v9.43)

Contact to me in PM after 2 hour and I try help you remote - install team viewer id and password.

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11-08-2017, 23:47	#1 (permalink)
ghostrus Freak Poster Join Date: Sep 2009 Posts: 273 Member: 1123539 Status: Offline Thanks Meter: 14	Lg LS755 Stuck on Lg Logo I have an LG LS755 From Boost Mobile. I flashed it with firmware with its own version and type firmware and now all i see is LG logo and nothing else happens until the battery is drained. I cannot get it into download mode nor factory mode any more. Any help will be greatly appreciated. Its not my phone , it is a customer's i am just buying time and hoping for a solution without jtag.

12-05-2017, 12:58	#5 (permalink)
ghostrus Freak Poster Join Date: Sep 2009 Posts: 273 Member: 1123539 Status: Offline Thanks Meter: 14	Stuck Lg LS755 On LG logo no download mode Will try Andrew thanks!

12-02-2017, 21:14	#4 (permalink)
andrew_tm Product Supporter Join Date: Feb 2007 Location: Europe Posts: 8,010 Member: 445973 Status: Offline Thanks Meter: 3,489	Try with eMMC adapter + Easy Jtag. --

12-05-2017, 13:28	#6 (permalink)
ghostrus Freak Poster Join Date: Sep 2009 Posts: 273 Member: 1123539 Status: Offline Thanks Meter: 14	I got the phone to work as normal, but there is a problem with the unlock, here is the log: LG 2-3G Tool v9.43 supported models: 1543 Phone mode is DOWNLOAD Start new sprint unlock... Laf Protocol: 01000004 Model name: LGLS755 Software verion: LS755ZV9 Android verion: 6.0.1 Target operator: SPR Target country: US IMEI1: xxxxxxxxxxxxxxx IMEI2: xxxxxxxxxxxxxxx Init EXT4 /system ... Detecting sprint type ... using old write method... Laf flash error: command error Elapsed: 29 secs. --> (v9.43)