I uploaded to rb433ah upgrade package 6.15. Now there 5.26. I rebooted many times router without upgrade…why?
Check what you dowlanded upgrade package and check version for processor mipsbe, also if you are upgrade from 3.x version, update system licence key.
you omit all the information necessary to help you, like routerboard model and filename…
(if have working 5.x licence key form this point of view can not be the problem, at max only the “Upgradable to”)
Rextended - Yes I made a mistake. 3.x - 4.17 - (update licence key) - 5.x -6.x
you are right …
how I solved it: log in terminal and reboot using it:
system reboot (yes)…