We are now installing the latest Yoshihiro and Team XGEN Custom Firmware 5.50GEN-D and XGEN-D2 for PSP1000 and 2000 (non TA088v3), This CFw now lets users play backup UMDs - ISO that require firmware 5.51 or 6.00 without patching the eboot. No more extracting the games eboot, using game decrypter to patch the eboot, Then finally re-building the ISO. that is no needed anymore, thanks to team GENyUS