I looked for this, but there were TONS of threads on the gamma packs.
and I just read this at psp.IGN.com
News from the FX3000 league
Following testing of the Gamma Packs we have found a potential issue that arises once all Gamma tracks have been downloaded. Although this issue has now been resolved we recommend that users who downloaded the original Gamma Pack 1 download it again with Gamma Pack 2.
Note - There is no need to delete the original Gamma Pack 1 from the Memory Stick as re-downloading will simply overwrite the old file. Any profile records that were set using the original Gamma Pack 1 will remain in tact.
Apologies for any inconveniences caused.
If we have a copy of the original download we can wait for all 4 packs to come out and see what type of issue pack 1 created.
Maybe another exploit?