You have a bad block on the flash/nand....install an ofw like 2.0 on it once 1.5 is installed...2.0 will remap the bad blocks so they cannot be written to.
Having bad blocks is normal.
Thanks Erland
one question
Now i'm on CF 3.52-4 M33 motherbord is TA079/81, which is better way to do what you said ?
1 . return on 1.5 with recovery,
2. upgrade OFW 2.0
3. downgrade with pandora
4. Install CF 3.52
Or for downgrade 1.5 i must use always Pandora ?
I'afraid to broke motherboard keys, now psp work good
Thanks