[P765] LG Update Tool Error After Flashing JB - LG Optimus L9 P760, P765, P768, P769

Hey All...need your expertise a particular issue that I'm facing. I flashed my P765 offline with the P760 JB kdz. flashed cm10.1. faced some issues so I returned to ICS with my cwm backup. Now when I try to flash either ICS or JB kdz with LG Update tool, it wont do it and I get stuck at 4% and it tells me to connect my phone with my computer - which I have already done (all drivers installed).
Attached is a screenshot and a log from the update tool. Hoping someone can guide me here. BTW - I have uninstalled and re-installed all drivers.

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I have the same problem...

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Did u try using cwm backups in the forum? If that works, try flashing kdz again n see :good:

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Gh0sT.RPG said:
Did u try using cwm backups in the forum? If that works, try flashing kdz again n see :good:
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Click to collapse
Yup....i am on my cwm backup(ics)..tried flashing jb kdz again, but it keeps doing the same thing.

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fab0004 said:
Yup....i am on my cwm backup(ics)..tried flashing jb kdz again, but it keeps doing the same thing.
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Then this s a serious problem, i cant help u further sorry requesting other members to look into this

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Is there any way to lock the bootloader? Оr someone upload backup оf JB?

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arman4o said:
Is there any way to lock the bootloader? Оr someone upload backup оf JB?
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hey all...i think I solved it...don't manually put your phone in software mode. Keep it powered on and in LG software mode. flash kdz using update tool and the tool will automatically put the phone in software mode.
arman4o, let me know if this works for ya !!!:good:

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Yes It works! Thank you very much! Work on p760

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[Solved][P765] LG Update Tool Error After Flashing JB
Glad it helped!!!

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fab0004 said:
hey all...i think I solved it...don't manually put your phone in software mode. Keep it powered on and in LG software mode. flash kdz using update tool and the tool will automatically put the phone in software mode.
arman4o, let me know if this works for ya !!!:good:
Click to expand...
Click to collapse
to me does not help. maybe because I unlocked botlooader.
I think that's the problem.
Currently i have :crying:the V10H but I'd be happy to come back again to JB
I think I have Beckup.
i Was trying to wipe the card and i found CWM backup I hope that this is a version of JB

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great
fab0004 said:
hey all...i think I solved it...don't manually put your phone in software mode. Keep it powered on and in LG software mode. flash kdz using update tool and the tool will automatically put the phone in software mode.
arman4o, let me know if this works for ya !!!:good:
Click to expand...
Click to collapse
Thats good workaround which solves this new problem. :good:+1

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aleksa2210 said:
to me does not help. maybe because I unlocked botlooader.
I think that's the problem.
Currently i have :crying:the V10H but I'd be happy to come back again to JB
I think I have Beckup.
i Was trying to wipe the card and i found CWM backup I hope that this is a version of JB
Click to expand...
Click to collapse
Hey i have an unlocked bootloader too....i actually tried this a second time and it worked...ensure that you have all drivers installed.

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Help
I back to v10a, but my MicroSD Card does not work, any idea? My phone is P768g
Thanks!
cmahendra said:
Thats good workaround which solves this new problem. :good:+1
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Click to collapse

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LuigiGDL said:
I back to v10a, but my MicroSD Card does not work, any idea? My phone is P768g
Thanks!
Click to expand...
Click to collapse
Format your Sd card with mini partition,with primary not logical option n fat 32 file system. ..
Sent from my LG-P760 using xda premium

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solved
I found out what is the problem. My computer has too many USB devices while the power supply is not the brightest. probably due to variations in voltage of 5V I had a problem updating. I disconnected bluetooth and external HDD after which everything is done regularly.

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fab0004 said:
hey all...i think I solved it...don't manually put your phone in software mode. Keep it powered on and in LG software mode. flash kdz using update tool and the tool will automatically put the phone in software mode.
arman4o, let me know if this works for ya !!!:good:
Click to expand...
Click to collapse
your are a champion,i was a bit to eager and flashed my wifes p768 with the jelly bean rom for the p760,bad idea,camera did not work anymore and apps like talk came back with error messages.tried to flash it back to ics but that was a no go with the manual option of sw mode,stopped constantly at 15% saying phone or device not connected.tried your option as last resort et voila' it worked like a charm.ics back on the phone
camera working again and no error msg's.
have to say but that the upgrade in general to jb on a lg phone does not seem to be a huge step,when i flashed my galaxy s2 to jelly bean that phone had like a whole new feel about it,feature and smoothness wise.
either way u made my day m8:laugh::good:

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sgrurru said:
your are a champion,i was a bit to eager and flashed my wifes p768 with the jelly bean rom for the p760,bad idea,camera did not work anymore and apps like talk came back with error messages.tried to flash it back to ics but that was a no go with the manual option of sw mode,stopped constantly at 15% saying phone or device not connected.tried your option as last resort et voila' it worked like a charm.ics back on the phone
camera working again and no error msg's.
have to say but that the upgrade in general to jb on a lg phone does not seem to be a huge step,when i flashed my galaxy s2 to jelly bean that phone had like a whole new feel about it,feature and smoothness wise.
either way u made my day m8:laugh::good:
Click to expand...
Click to collapse
Happy it worked my friend !!!:good: