It is worth stressing this point, because I didn’t appear to understand the ramifications.
Yesterday I had updated from 3.11.16 to 5.0.0… but then overnight my Omnia appears to have “updated” to 4.0.5 (not at all successfully). I’ve just done the medkit update to 5.0.0 again… but this time taken the additional step of switch-branch hbt.