Even if the PSPs do NOT support 1.5 kernel, now with custom IPL, there is no
need of 1.50 kernel to boot CFW, other firmware kernels can be used, though
1.5 is more "Dev-friendly"
If you BRICKED your "memory stick" while formatting and HAVE CFW: Load your
PSP in Recovery Mode (press R while turning power on) or just remove the
battery and put it back in) then Choose Toggle USB and properly format your
memory stick through there.
