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Flashed firmware of other phone on L7 II P715, bricked, KDZ/LGMST won't recover it

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rafaelluik
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(Last edited by rafaelluik; 7th May 2014 at 12:10 AM.)
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Battery Low Flashed firmware of other phone on L7 II P715, bricked, KDZ/LGMST won't recover it

Using KDZ, a friend installed a P700/705 ROM in his L7 II P715 (/P710/P713/P714) by mistake, following an outdated tutorial that led him to believe the ROM would be compatible.
Result: it's bricked and other people in some Brazilian forums have done the same mistake. I'm trying to help them.

If turned on normally it gets stuck in LG's logo screen. Hard factory reset using buttons or USB cable method doesn't solve the issue.
The user says he tried many ROMs (probably also L7 I ICS ROMs :x) and after installed some ROMs make white stripes appear in the screen and others will make the LG logo screen to blink.

If turned on with the right buttons to enter emergency I think it does normally.

LG Mobile Support Tool isn't able to recover it. It gets stuck in % / says unknown error.
Tried KDZ with PhoneMode Diag, Emergency and CS_Emergency, nothing will recover it. Attached is a screen of a failed try of putting the correct stock L7 II P715 firmware on it.

My idea: maybe we can recover it by flashing a custom recovery (via adb or something else that works in emergency or download mode) then he could flash anything in his phone including the correct kernel and ROM and everything should be fixed, but since unlocking the bootloader is a requirement (please correct me if I'm wrong) and it seems the only method of doing so requires a phone working normally it seems there's no solution.

The technicians from repair centers are noobs, they were unable to recover it (I think they don't even have a BOX for this device model) and blame things like the motherboard or screen.

Any help would be appreciated.
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AXDFREEDOM
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Quote:
Originally Posted by rafaelluik View Post
My idea: maybe we can recover it by flashing a custom recovery (via adb or something else that works in emergency or download mode)
Any help would be appreciated.
ADB need that your phone is on, if you can go in bootloader mode you can use FASTBOOT.
with fastboot you can flash a recovery..
maybe it can help you
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rafaelluik
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Originally Posted by AXD96 View Post
with fastboot you can flash a recovery.
Even with locked bootloader?
 
AXDFREEDOM
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Originally Posted by rafaelluik View Post
Even with locked bootloader?
i dont know how u can go to fastboot mode without boot into the recovery or without adb.
but if you can get fastboot u can do something
LG L5 E610 KITKAT 4.4.4 CYANOGENMOD11 - Here to learn! OptimaTeam
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