No baseband,modem firmware or bluetooth.

[chuddbungler]

Hi, I have an iPhone 4 16gb (4.3.3), there is no baseband, modem firmware or bluetooth visible in 'about' and I'm running Cydia 4.3.3 on it.
I have tried restoring it but itunes won't let me do it without updating it to 4.3.5. I have scoured the net for hours but sadly no joy.
Would anyone know of a solution to get my phone working?
Cheers, J.