I've connected my NV4 upto a serial port to put the new currency data in (I have the software and the note defs from Innovative) - but I get an 'error 7'.
The COM port's tested okay, so all I can surmise is that the Programming Box must actually do something, other than pass the serial signals to the NV4.
£5s and £10s test out fine, but £20s reject (as I'd expect).
I could manually teach it the new £20s, but a) I've not worked out the pin-outs to get that done yet and

All help much appreciated.