i'm intend to flash my firmware by Recovery Flasher, but in spite of where i get it, it always shows as "corrupted data" in my xmb, what can i do now???

i'm in 6.35 ofw,and mine is psp 2000.

i got it here: http://filetrip.net/f25191-Hellcat%2...sher-1-65.html

and here:http://psp.dashhacks.com/file/1736