Dirty upgrade means if i'm on 386.2 and i upgrade via UI to 386.3?
I was upgrading this way multiple times...
It's bit pain in the butt to Factory reset and setup everything from scratch all the time...DHCP client list manually type all again

as it seems YazDHCP is not working now
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I did factory reset and seems fine, even other issues are gone like missing names in hostnames, AiMesh works after restart....
i realise that :
JFFS format after boot not working...from some reason , it get cleared only via factory reset.
After 1st Factory Reset my router i put few hostname entries in WebUI - into DHCP Server, then reboot, add few more and after other reboot those from 2nd entries are gone.
Like is not writing them to "disk/file".
so i re-flashed FW , again factory and now seems fine.
Problem is that as im setting up all the options, then after restart i find out something was not saved...really messy to repeat all those steps over and over.