I just found a bunch of brand-new, in plastic, RB133 boards and noted they are running ROS 2.9.50, I can’t even locate the “legacy” 4.37 or whatever on the mikrotik website, only option I have it to try and JUMP all the way to 5.67?
Also, I tried it, and of course it says “license does not support upgrade”
Any tips on getting this thing upgraded, or are they completely obsolete??
Recommended way used to be to upgrade to 3.30 first, from there update licence to newer format and then you could go to any higher version. Packages for 3.30 are still available from download page, scroll down to “Useful tools and utilities” and click “v3.30 mipsle”. So upgrading those boards should be no problem.
How much useful they can still be, that’s another question. They are sort of obsolete, CPU is weak and support from MikroTik ends with RouterOS 6.32.x. But for some light tasks they might still serve well.