Hi! I was stuck on 22.214.171.124 and never got notifications when new versions came out.
The Settings app claimed the OS is up to date.
Because gmail sign-in stopped to work recently I finally found some time and upgraded to 126.96.36.199 using
ssu re 188.8.131.52
I had to do that twice and reboot twice.
(with the 184.108.40.206 2-step verification started to work)
Can there be a reason why upgrade/update notifications do not appear and the Settings app always claims the OS is up to date?
What I did suspiciously at the time? Maybe one thing. Per the Jolla Support’s advice I upgraded to 220.127.116.11 using ‘ssu re 18.104.22.168; version --dup’ and installed ofono-ril-plugin explicitly due to disappearing SIM cards. It helped. Nothing else. But subsequent OS updates stopped to display.