Hello the hp community
here are the ROM Images for the HP 8753C ver 4.02
All the files are in the HEX format
the EPROM are Intel 27C010 
I use a flash eprom of the same brand as a substitute for the EPROM 

If anyone have an HP8753B ver 3.0 I am interrested to have copy in HEX format 
ON1EV
GUY
BELGIUM