I tried upgrading a hAP AC2 from 6.45.8 to v7 beta5 by using /system package upgrade and that reports missing npk so downloaded the file and copied to hAP AC2 and rebooted.
That reports in the log it upgraded but the router is still showing v6.45.8
( file used was routeros-7.0beta5-arm.npk 11.5MB)
