Ok first things first. This will only fix certain bricks. If after factory resetting with recovery and following this unbrick guide you can't get your phone to work, try this guide: http://androidforums.com/optimus-m-all-things-root/364080-unbrick-phone-lg-screen.html
The first thing you have to do is download and install the Optimus M drivers from here if you haven't installed them already.
The second thing you will have to do is download the CAB to KDZ converter and KDZ flasher from here: KDZ_FW_UPD_EN.zip
Next is to get the firmware cab file: MS690ZV7_08.S7_08.P3018.cab
Now turn off your phone (pull battery if need be), and leave it unplugged
Go into download mode (aka emergency mode) by following this:
Hold back key+down key and plug in USB chord.
Now you are ready to flash your phone
These are the instructions to convert the cab to a KDZ and flashing it:
If it bootloops still, try to factory reset (while phone is off, hold volume down+home key+power).
If that does not work, use joneidy's unbrick guide showed at the beginning of this thread. If you do that guide you will have to reprogram your MEID/MIN/MDN and flash the PRL. This guide will not erase any of the phone's programming but sometimes fails in certain cases of brick. LGNPST from joneidy's guide is a PITA to install sometimes, so I made this to not replace his guide, but post a method that will work most of the time and be less of a PITA to get the phone back in working order.
The first thing you have to do is download and install the Optimus M drivers from here if you haven't installed them already.
The second thing you will have to do is download the CAB to KDZ converter and KDZ flasher from here: KDZ_FW_UPD_EN.zip
Next is to get the firmware cab file: MS690ZV7_08.S7_08.P3018.cab
Now turn off your phone (pull battery if need be), and leave it unplugged
Go into download mode (aka emergency mode) by following this:
Hold back key+down key and plug in USB chord.
Now you are ready to flash your phone
These are the instructions to convert the cab to a KDZ and flashing it:
- Install msxml.msi
- Disable antivirus software
- Open UpTestEX_mod2_marwin.exe
- Wait for the program to open
- Look for "Encrypt cab file to kdz file"
- Click the folder icon
- Choose the location of the cab you downloaded for the firmware
- Encrypt cab -> kdz Program will freeze up. DO NOT EXIT until program says Done!!! Otherwise it won't finish converting.
- Close program
- Open KDZ_FW_UPD.exe
- "Type" choose CDMA
- Choose in "Phonemode": Emergency
- Click the folder icon and choose the kdz file that UpTestEX_mod2_marwin.exe just made.
- Click Launch software update, wait awhile for it to flash and then boot, and enjoy!
If it bootloops still, try to factory reset (while phone is off, hold volume down+home key+power).
If that does not work, use joneidy's unbrick guide showed at the beginning of this thread. If you do that guide you will have to reprogram your MEID/MIN/MDN and flash the PRL. This guide will not erase any of the phone's programming but sometimes fails in certain cases of brick. LGNPST from joneidy's guide is a PITA to install sometimes, so I made this to not replace his guide, but post a method that will work most of the time and be less of a PITA to get the phone back in working order.
