Hey, After downgrading to 1.50 (in which I experienced a semi-brick, I thought I had a heart attack but luckily it worked out) I was planning on installing 3.03C. However, it turns out that I need to have both the updates on there which is 33 mb (and I still have the standard 30mb, because I was going to wait to buy the 2GB version after I had upgraded to 3.03C because if it bricked it would've been pretty much worthless. However. This brought me to another question; I now have all these files of the downgrade taking up space on my memory stick (the 1.50 update, the x.yz update etc). I just wanted to know if it was safe to use the 'Format Memory Stick' function in the system settings of the PSP without completely wrecking my PSP. I am 99% sure it won't, I manage these things fine on my own but since it's a 250,- machine that I won't be able to fix after I fusk up, I'd like to know for sure.