Can't install the new .7 sprint update?

[bitslizer]

running stock sprint .6 ROM, originally have the RA heroc 1.6.2 recovery installed... won't install the update, so I flash a stock recovery img I found, and half way through it give me the triangle with the exclaimation point screen. pressing home+power give me more details

say "E:can't find update script"

anyone else have this problem? or know how to fix it? i really want to do this update without having to resort to factory reset.