That is also an important question of mine! ;-/
I am a little bit bewildered that the CLI isn’t updated alongside the main software, I had this very problem already in the past when vault format 7 got introduced.
The CLI is the key part for any local cloud solution which wants to take advantage of backing up everything to any external cloud platform in a safely encrypted way, so with every vault change such users hit a dead end if the CLI is kept that separate /wrt to updates.
Is there anything I could do about that?
In particular: is there any documentation available how CLI and main program correlate (source-wise) so that I could help myself?
I’m just about to setup my cloud back anew so I’d really prefer to not have to resort to an outdated vault version and, hence, also outdated applications on my mobile clients which shall be able to access the vaults directly, too.
(avoids looping data through my internet access if not necessary, the same time keeping the data up-to-date in my local cloud)