Great, I think this will be worthwhile anyway as your image version is an old version. It’s probably not worth delving deeper into the current one.
Glad to say that a new SD card with emonSD-17Oct19.img fully updated and with my previous backup restored has got me to a fully up-to-date and working state. A little work to do on Node-Red flows and restoring my custom dark theme, but that’s all.
Thanks for your help @borpin @TrystanLea @djh
Great to hear @cmcg!