@jam1388 hmmm , you might be right, i guess there are or was ways to ''downgrade''
https://forums.ubports.com/topic/1836/how-to-go-back-to-ota-3/16
https://github.com/ubports/goget-ubuntu-touch/tree/master/ubuntu-device-flash
it's 2018 . if still effective methods .
Anyone ?
you tried ?