This is to answer all questions on 3.71M33. Q.I messed with the 3.71M33 flash0 and now it doesn't load up, and Recovery nor Pandora will work.How can I fix it? A.You must have a nand backed up using either the Pandora's Battery or Universal Unbricker DC-3.Then you can restore it. Q.I don't have a backed up nand and I used my friends nand.Now it doesn't work.Why? A.Restoring another PSP's nand will screw up your PSP.That's why. Q.So I can't mess with my flash0.How can I get my custom themes? A.Your answer is here . Q.Why can't I play games from 3.71M33 anymore? A.No one's found the exact answer, but its probably bugs from 3.71M33.Try getting 3.52M33-4.Or you can try to rename your file, download another one because it could be a bad dump. Q.I tried to upgrade to 3.71M33 but the official 3.71 Update shows up.So I turned of my PSP and now it's bricked!Why? A.It actually is the 3.71M33 upgrader.3.71M33 looks just like the 3.71 OFW update.By canceling it, it will brick.Use Pandora's. Q.My previous CFW seems to work fine, but by using 3.71M33, alot of options don't work.Why? A.All these bugs are probably from the change of the flash.The older firmwares had no custom themes on it, while 3.71M33 has which requires a change to the flash.I suggest you use 3.52M33 for now. Q.My new game doesn't work!Why? A.There's alot of chance that it's because it requires 3.72. Update if you want, but not recomended(Unless you have a Pandora's Battery or Unbricker DC-3)--This problem should come to you yet. If the answers were wrong, then correct me.If you have more questions then tell me, I'll put it up.