TH_V1 & PS1971> If you have v2.0 firmware, you will need to use Fanjita's Eboot Loader. I don't have a v2.0 PSP, so I can't help you with running the loader, but one of my beta testers has v2.0 and it definitely does work.
L0RD M!XXX> CCS64 does not appear to be open source. I will be looking at new features in the future and I have tried enabling 1541 emulation, but ran into problems. I will look again before the next release to see if I can get it working.