Is it OK to upgrade to iTunes 9.2.1?

[beastofbourbon]

I have a iPhone 3G 3.1.2.
I jailbroke with blackra1n.
I unlocked with blacksn0w.
I'm currently using iTunes 9.1

If I upgrade to iTunes 9.2.1, will I lose my jailbreak, lose my unlock, or experience other problems?

Thanks in advance!

[torrenegoshima]

+1 I'd like to know the same forAn iPad 3.2.1

[xDestructionx]

well i have an iPod Touch 3.1.3, jailbroken using spirit, and my iPod will not sync with my iTunes 9.2.1 library, even after installing certain third party apps that are supposed to help solve this problem.