I've been testing some upgrade scenarios for Version V7 with beta4 being the current beta release.
Tests were conducted on:
All 3 routers were "No Config" resets so they have no odd configuration present.
6.44.6 -> 7b4 - Bricked on all 3 routers. Proceed to Netinstall
Netinstall to version 7b4 failed with netinstall tool of 7b4 and 6.44.6
Netinstall to version 6.44.6 worked perfectly.
6.46.2 -> 7b4 - Bricked on all 3 routers. Proceed to Netinstall
Netinstall to version 7b4 failed with netinstall tool of 7b4 and 6.46.2
Netinstall to version 6.46.2 worked perfectly.
Interestingly enough, when going from version 6.44.6 or 6.46.2 to V7b3, there are no issues.
Then going from V7b3 to V7b4 --- It works!
A curious upgrade path to follow for those who are having bricked routers after going from V6 to V7b4
If I've missed anything or should test on other models or versions, let me know.
New versions come with fun new problems.