PSP dev Yoti has updated PSPident, the mother identifier for your PSP. Run this is HBL or HEN and see if you really have a 4G PSP-3000 motherboard or not? This update now supports the PSP-3000 4g motherboards and the PSP Go.
PSPident 0.70 changelog:
v0.7
- PSPGo support
- PSP 3000 TA-093 (4g) support
