Upgrade naim ND5XS2 - NaitXS3

[sihctr]

Trawling back on some older topics, I found this message from @NeilS:

nDAC firmware disaster

@wardy the information provided by our tech support was not inaccurate - you should be able to change the f/w to any version you like (including backwards). The nDAC is a fussy customer when it comes to USB hardware - partitions, size, formatting etc. Where abouts in the world are you? I could perhaps, organise getting a tried & tested USB update stick sent to you to try? (Obviously don’t divulge any personal details here). Regards Neil.

So it seems I might be able to revert mine back to 4.10.6 at will and compare after all.