Well, as far as Blu-ray goes, there is this article: http://gear.ign.com/articles/938/938051p1.html

Go to the trophy icon and then select the game of interest and scroll to the platinum trophy and see its description. Most of the trophies have a description as to what you need to do.

is ther a way u dont have to format a fat32 hardrive cant u just put the hardrive in the ps3 and just back iu up

SLAMMIN23

Can you please elaborate as to what exactly are you trying to back up? If you need to back up your data from the hard drive already in, all you need to do is connect an external drive with a usb and do a back up (utility already present in the os). You don't need to back anything else up, as any clean drive you insert will work (if i remember correctly from the time i changed my drive). After this point you can transfer the back up data from the external drive.

Well, I feel like to make sure that it is the hard drive you need to get a 3rd one and use that for a while to compare and diagnose the problem. ( you could always buy an external inclosure to convert plain drives into a usb powered back up drives).

I believe you can download each PSN item 3 times total. So, if you keep the same PS profile you should be able to redownload your costumes.

I dont think PS profile even matters, as long as you can log in with the same data to PSN, you should be able to use your other 2 downloads.

I just got the game and played for a while without updating. I was able to finally get the update and now some of the trophies I should have are not given to me.

Do i have to restart from the begning or at some point I'll finally get them?

Not positive, but the new Prince of Persia seems like something you are looking for. You can also try Puzzle Quest from PSN.