I surrender

Sony just released the new 3.0 firmware for the PSP and I'm not longer trying to get the Chotto Shot run on 1.50...

Yeah, I surrender. But fortunately I don't own only one PSP. So I will upgrade my white TA-082 to 3.0 and hope to enjoy the nice new features.
If anyone gets the cam to work on DevHook or 1.50 firmware feel free to make a comment... :-(