i think you only get the Lv2 error if you have not installed Lv2.pkg before running asbestos, if you dont get the error because you have Lv2.pkg installed dont worry you can still do the rest of the thread
ps, the best way to edit flash files and test them is to use JaiC_UFLv03.pkg, you can copy flash to usb and run on ps3 from usb via this homebrew app the safe way, edit and run flash from usb