Hi Rob,
Apologies for the delay in replying.
Work/life/exhibitions got in the way.
I've updated everything as far as I can - dongle, etc.
The Lenz LZV is running v3.6 (the latest version),.
I still can't get other decoders to work with the HM7000/dongle on long addresses.
I tried the CV update and I got an error "Compatibility notice This feature is only compatible with HM7000 decoders", so doesn't appear to be available with the dongle.
If you could escalate the issue, that would be most appreciated.
It would appear to be at least partly sorted as @Tony Walker reported that long addresses work with a LZV200 base unit.
My plan is to replace the ageing LH100 handsets on mine and the club layouts, so if it can be sorted, then I'm up for buying three more dongles for my own layout and probably another four for the club layout.
TIA