Please contact us directly (via the link on the sprog-dcc website) if you want to try updating yourself.
The older firmware is overwritten, rather than being explpicitly deleted and it is done through the USB or serial interface with the PIC installed.
USB serial adapters should work fine.
--- In sprog-dcc@..., railroads@... wrote:
> When updating software on Sprog -
> Is older version deleted first ?
> Is it done with Pic installed ? (no need to remove for re programming?)
> Can a 9 pin serial version be used with USB/serial adaptor ?