Skiwan, Sounds like a hacked 2GB chip. A format is really your only option for removing the hack and stoping file corruption. I would get on to your seller as soon as possible but most of the crooks are less than helpful.
A format should not effect your firmware but hacked chips can sometimes be a problem to format and you may need to use a formatting application, you will find a few in the Downloads\Tools section.
__________________
If you have been ripped off with a hacked player by a seller submit a report to www.ic3.gov
|