Lg gd900 hang done by octoplus lg tool.[Reference]
Tool:
Octoplus LG Tool
5310 USB Cable
Procedure:
Open Octoplus LG Tool
Select proper model
Select USB then tick Connect
Insert USB cable to GD900 without battery
Put firmware then Tick Write Firmware
Screen shoot!


Note: Pagdating sa 99% kung mapapansin nyo may erro sya "error of writing block" pero wag mag alala dahil ok lang po yun.
Tool:
Octoplus LG Tool
5310 USB Cable
Procedure:
Open Octoplus LG Tool
Select proper model
Select USB then tick Connect
Insert USB cable to GD900 without battery
Put firmware then Tick Write Firmware
Screen shoot!


Note: Pagdating sa 99% kung mapapansin nyo may erro sya "error of writing block" pero wag mag alala dahil ok lang po yun.