Ive been having problems recording DVD5's since upgrading to firmware version 1.0c on my Sony DRU-510A. How can I uninstall it and go back to version 1a? Or is that not possible?
If you wanna go back to your old firmware, then you just flash back over like NiTCOM said. You could also flash the latest firmware in which generally solves all the problems with your drive.
Just reinstall an older version over the newer one. There is a version 1.0D out now - i've just upgraded too, perhaps that may be better?