Angelina Jolie

My psp on cfw 5.00 m33-6 shows no games even though I do have them?

I have the iso for Kingdom Hearts: Birth by Sleep and I have just recently put 5.00 m33-6 firmware on the psp. I bought a new lexar 4gb pro duo memory stick and formatted it on the psp. I put the iso in the “iso” folder in the root of the memory stick. Also, I have changed the UMD ISO MODE to m33 driver. (Ive also tried the other modes to no avail). Still, when i go to memory stick at the game section and press X, the psp tells me “there are no games.” Can anyone help me fix this? please and thank you!!