Just putting this out there, but there's a chance your USB cable is shot, or that one of the two receiving ports are shot, either on your PC or on your PSP.
If your first thought is, "But it was working when I put the CFW onto the PSP, so that's not it", test it! Things do break, simple stupid things like USB ports and cords break most often after they were working. Thus, why they don't work anymore.
Try different cables and different computers, and I agree with ^^^. Reflash your PSP to OFW and test it. If it's good, then your cable and ports are okay, you just botched the CFW installation, so then you're looking at figuring out why it's botching.
Process of elimination is key.