Last week of July, Sony released system software update 3.41 for PS3 built with feature that will bring game and video recommendation to the PlayStation Store.
There’s another minor update to PS3 systems, software update version 3.42, which includes some additional security features. This seems to be an update that blocks the PSJailbreak and PSGroove applications released last week. This update is mandatory for those who want to continue accessing the PlayStation Network or PlayStation Store. You can visit this page for the details and instructions on how to update your system.
Update: Sept. 21, 2010
PS3 System Software Update Version 3.50