Hello guys, I'm a brazilian (sorry if I wrote wrong words). The solution for this is (I did this and worked perfectly):
1 - You must to make backup of yours files = BACKUP UTILITY>BACK UP (I have used an external hd in FAT32 to my backup)
2 - You must to format your PS3 = FORMAT UTILITY>FULL FORMAT (This process will end in 10 hours approximately). The system will restore automatically.
3 - Restore your files = BACKUP UTILITY>RESTORE
If I helped you, send me a response... thx