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Here's what I want you to do:
1. Backup all savedata, and whatever else is important, then reformat your memory stick.
2. upgrade to OFW.
3. re-register PSP, then download all paid content again.
4. downgrade to 500m33
5. upgrade to 550GEN
6. see if the "backup" folder appears. If so, back it up.
7. upgrade to 550GEN-D
8. see if that "backup" folder is there yet.
9. copy contents of the backup folder in flash2.
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Did all of that. Nothing :|
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use media go to download, with your PSP not connected
then once its downloaded, close mediago and connect your PSP
then use windows explorer to transfer
if that doesnt work
then the problem is probably in your USB
try transfering to MS w/o the PSP
