I recently updated my MOX to running the latest medkit and after installation tried performing an update once connected to the internet and received a 404 notification that a URL was not found.
It looked like the updater didn’t install the additional software packages from repositories that I had selected as well and, I think, just aborted the update after the 404.
The URL that it listed as 404 is:
I tried navigating here with my browser and noticed that it is 404 from my web browser as well.
The date on the medkit I used is 2021-05-14 with SHA256 sum of: