you mean you have used the GetDbase function in Vsig to get the unit's modules database?
I'd need to look at the sigfile to understand what is going on.
When the unit gives that error and repeats it at power up, simply power the unit on and press and hold the PROGRAM key when you read H8000 on the display. It will then ask if you want to unload the current preset. That clears the ram content.