help!!! im updating my ps3 OFW (long time no update forgot what is the OFW number) to the latest version using the psn. after download, ps3 go into install mode, suddenly got hang when reaching 29% and give me this code 8002F147. it ask me to shut down, reboot. and guess what,it happens again. i stuck at this screen and it really make me mad. can i revert back to my last good configuration? My ps3 is ps3 phat 60gb my set and its has never been jailbreak. anybody have an idea how to solve this problem?
Update (still stuck)
i have google this problem and one of suggested answers is to open up the HD and format it. is it a good move?

Already try it. Still do nothing. The dang thing never tried to read the pendrive at all thanks though..

Already settle it. Format hd then reinstall ofw using pendrive. There goes my platinum throphy and savegames

Ps 3 hardisk are just like the laptop hd or the portable hd. Take out the hd, connect to pc then format using disc managememt. Pick ntfs format. Then put it back into the ps3. Enter ps3 safemode then follow instructiom onscreen. All these steps can be seen in a youtube video
Search code error 8002f1f9 in youtube.
Btw if your ps3 jahanam after following my instruction aku xtanggung jwab.. hehe. Just to share experience only