Reverting LG GT540 to its old interface I just tried to install my LG GT540 with a KDZ file that I downloaded from a site, hoping that my problem with the Android Market would be fixed but nothing happened.

My problem is that I can't revert the phone back to its original interface. It now has a Vodafone on the background screen.

Any idea on how I can revert it back?
If you're on Globe, then I assume you're in the Philippines. (Same here)

Check this out: http://www.droidevelopers.com/f236/11721-%5Bdownload%5D-%5Bfirmware%5D-lg-optimus-gt540-original-roms.html. It has a ROM for Philippines, and instructions on how to install it.