Hi all.
I am wondering to wich version RB433AH upgradable? According to this http://routerboard.com/comparison.html#powerSeries RB433AH have license level 5.
The same thing I see in my routerboard:
system license print:
upgradable-to: v4.x
nlevel: 5
Also it tells that it upgradable to v4, but when I make desigion to buy it I read this information: http://wiki.mikrotik.com/wiki/Software_levels and according to this level 5 should be upgradable to v5.
I'm a bit dissapointed I've got not what I think I should.

you probably purchased this device at time when v3 was still recently released, so license system wan't updated yet. For this case, ask Support and they will give you appropriate key.

RB4XX devices with L5 should have "Upgradable to v5.x"
RB4XX devices with L4 should have "Upgradable to v4.x"

Thank you Normis.
Now I'm happe customer