Ok, here's the deal... you can easily update to Rogero's CFW, and I recommend it...and I recommend using Condor Updater to do so.viewtopic.php?f=25&t=2852&start=20#p5711
The thing is, a couple of days ago, Sony blocked PSN access, so there's no way you'll get online, with that said...I still recommend you update to Rogero's CFW, as I use it myself.
1. install Condor Updater
2. put PS3UPDAT.PUP in UPDATE folder on root of usb stick, attach to PS3.
3. run Condor Updater to install CFW.