Root Help me unbrick my LG Optimus L9 please

[andy350z]

Hello guys.

I just bought a brand new LG P760 (aka Optimus L90 , firmware 4.1.2. I have rooted it with Cydia Impactor. So far so good. I wanted to make my device install as default on SD card, so I started playing with Aparted from Google Play Store. I dont know exactly what I did, but i can tell you that I have attached 2 pics with the menu that I have interacted with. I made 2 partitions, PART: 1 has size of 1500 MB, PART: 2 has size of ~12000MB. I used ADB to make SDCard default storage device (db shell pm setInstallLocation 2) the restarted. After it has restarted, I tried to install something big from the Store, but it said that I had insuficient space. I tried to reverse PART1 with PART2, replace sizes I mean, but when I tried to delete PART2 it said that it is in use and I could not. After that, I started playing with the /dev/block/mmcblk0 and mmcblk1m, without knowing what they do. I tried to restart the device and... poof. It didn't. It is dead now. I tried all combinations of keys. The device is detected in windows as OMAP4430. I tried fastboot, it said ok but...it did not start. It doesn't start anymore. I have attached 2 pics with the program...

 

[Mozartillo]

Hi andy350z, you could try this: in the LG Mobile Support Tool in Options (in upper right hand corner) choose Upgrade Recovery.
Cheers. Good luck.

Sent from my LG P76020L-EUR-XX unlocked and rooted

 

[andy350z]

Hi andy350z, you could try this: in the LG Mobile Support Tool in Options (in upper right hand corner) choose Upgrade Recovery.
Cheers. Good luck.

Sent from my LG P76020L-EUR-XX unlocked and rooted

Thx, I will try it but can it work if my device does not power on? The only sign of life is that OMAP4432 device that appears on the screen when i connect the device...

 

[Mozartillo]

Thx, I will try it but can it work if my device does not power on? The only sign of life is that OMAP4432 device that appears on the screen when i connect the device...

Hi andy350z, yes, it can; you could do the following steps (from cmahendra's guide in XDA) :
..1. Remove the battery and the USB cable from phone.
..2. Without the battery, plug the USB cable and connect the PC to the phone with USB cable.
..3. Press and hold (VolumeUp) key and press (Power) key for 2/3 secs. You should see "S/W Upgrade" on the screen after a few seconds.
..4. Re-insert the battery in the phone.
..5. Start LG Mobile Support Tool(B2CAppSetup.exe), let it find the phone (and load drivers) and start the software update ( or upgrade recovery) .

This method is online and faster internet will be required which will download around 500+mb file while recovering. So be prepared .

Cheers. Good luck.

 

[andy350z]

Hi andy350z, yes, it can; you could do the following steps (from cmahendra's guide in XDA) :
..1. Remove the battery and the USB cable from phone.
..2. Without the battery, plug the USB cable and connect the PC to the phone with USB cable.
..3. Press and hold (VolumeUp) key and press (Power) key for 2/3 secs. You should see "S/W Upgrade" on the screen after a few seconds.
..4. Re-insert the battery in the phone.
..5. Start LG Mobile Support Tool(B2CAppSetup.exe), let it find the phone (and load drivers) and start the software update ( or upgrade recovery) .

This method is online and faster internet will be required which will download around 500+mb file while recovering. So be prepared .

Cheers. Good luck.

Ok thank you, as soon as I arrive home I will try your advice and communicate the answer to you. Many thanks

 

[Mozartillo]

Ok thank you, as soon as I arrive home I will try your advice and communicate the answer to you. Many thanks

You're welcome, good luck.