Than you should publish the debug version with the V21 or V13 notation at the end...
Installing 14.04 fails
yes, I added a comment 2
I fully agree. Exactly this happened to my matrix (HW V1.3) running Ubuntu 12.04...
So how to install that by uupdata.img? you need to modify the MGtools config.ini...
Release notes or changelogs would be very helpful. Because new users would start...