Upgrade from Barrier Breaker 14.07 to latest 21.02 (WD My Net N750)

Hmm, I maybe spoke too soon. Woke up this morning to no Internet, router is in a boot loop. The router was scheduled via cron to reboot last night, perhaps that reboot caused the issue. The router survived multiple soft reboot earlier in the week, unsure why this might be different.

The cause of this issue is very likely related to the previously reported SquashFS corruption problem, referenced here - and here.