Thanks for the tip.
I did read a lot about downgrading 2.71FW on TA-082 Mobo on various sites, but they all provide a warning of possible bricking.
Since I just bought this, you'll understand why I'm not exactly eager to do the same.
Is it safe?

Also, one more thing.
If you've read my first post at the top, you'll know my problem in playing a CSO file of Def Jam. On the XMB menu, under the Def Jam game icon there was also a PSP update for 2.60FW mentioned.
Is that normal, even though I was on DevHook 0.51 emulating 3.02FW?