saguaros Sorry for the delay i was at work.
Yes it that the files that i downloaded (3.98MB).
I saw the new update for the framework and i had the same error, but using "manual Upload" i forced the T£ to the new version for php 8.1.x.
i was not able to update The JAEM (the video linked in your page it about joomla 2.5 /3.x) using the proper option in the actual JAEM
I SOLVED the TEMPLATE UPGRADE: i noted that the REPOSITARY was set to "local Repositary" and i did the upgrade.
Now the upgrade problem is on JAEM ( i see all the upgrade avaible from 2.7.3 to 2.7.5 but if use the "upgrade now" botton i get a RED "500".
If i use "to start using auto update of supported extension, Upload new version of the extension now." and i select the .zip file, after a while i get
"Si è verificato un errore. (an error occur)
0 Class "JError" not found".
Hope can help, but it seems and error that i get when i try to upgrade component using php 8.0.x version, and i solved using a php 7,x version, but now it is no more avaible on the server of my host