I upgraded a CS133 from ROS 2.9 to ROS 5.2 directly and lost my license (i know, i know, now).
Anyway, tried to downgrade it to 3.13, 3.30 and i still get the 24 hour license.
Went to mikrotik.com made account, requested new key, got one but i cannot load it at all in the routerboard.
I followed the instructions on:
http://wiki.mikrotik.com/wiki/Manual:En ... icense_key
Still cannot change key - invalid key.
I even made a key file with the new 8 key serial as name and the long key inside, tried copy paste, and even in the console, still nothing....