I wiped the PIC and loaded the bootloader, read back a screen dump and showed FF for all blocks apart from the 1st four. The PC app fond the pic and uploaded the main code - You can see that the first 4 blocks remained the same so I'm guessing it didn't overwrite the bootloader (see the diagram attached)

My PicFlash application has tick boxes for code protect sections of PIC memory - is it worth enabling this for 0x00 ??



Sorry guys the forum resizes the image - here's a link to the full sized one http://www.micro-heli.co.uk/screendump.png