Ok, I'm planning to install CFW m33 on my psp. Looking at this, it seems it's really easy. But before I do, I have a few questions. 1. I currently have OFW 5.51 (I just HAD to play Dissidia demo!), can I still install CFW on my psp? 2. You install the CFW with a Magic Memory Stick. But after installing CFW, do you still have to use the Magic MS, or do you have to use a clean one? Or can you just delete the files or format the Magic MS and use it as a normal stick again? 3. The latest CFW version of m33 is 5.00. This is the same as OFW 5.00, right? So any game or program that need to run above OFW 5.00 can't be run on CFW m33 5.00, right? 4. I use a phat psp, so I guess I'll need to buy a second phat battery just in case. However, how rare are phat batteries nowaday? 5. What's better to use, a SanDisk 4GB Memory Stick or a SanDisk 8GB Memory Stick? Thanks for the help.