you will be needing the ff:
LG utils KM555
winimage
Flash USB (if you used R&D tool before, you have already have this.)
.Install winimage and flash usb
.Extract KM555 utils on your desktop
.Move KM555.flb to your drive C from KM555 utils folder
.Remove you phone's memory card, sim and battery
.open km555 utils on your desktop and run KM555-Utils-EN.exe
.type the following and hit enter after every line (downloading cust)
D
\\.\USB1
C:\KM555.flb
CUST_THEME (after you hit enter here connect your phone immidiately)
.Wait for the cust to be downloaded. unplug your phone after downloading cust (will be downloaded on KM555 utils folder)
.you will be having an error. Its normal
.Close KM555-Utils-EN.exe after seeing the error.
.Open your KM555 utils folder, you will see a CUST_THEME.big file (rename it any name you want, say CUST_THEME)
.Move your CUST_THEME on your drive C
.Open your CUST_THEME with your winimage.
.you will inject files here.
.after you have edited your cust, save it. close winimage.
.run KM555-Utils-EN.exe again
.type the following and hit enter after every line (uploading cust)
C
\\.\USB1
C:\KM555.flb
C:\CUST_THEME (after you hit enter here connect your phone immidiately)
after uploading it, unplug your phone. put your battery, sim and memory.
your done.
hope this will help.