How to check mikrotik license?

Question

Computer networks

There is mikrotik on a computer, version 5.24.
Details about him are unknown, inherited. I would like to update to the current version, but there are fears that it is pirated.
Is there any way to check the license?
There is level 6, but I don’t need one, 4 is enough.
If you are still a pirate, is it possible to buy level 4 and just replace it?
If not, then what?

Answer 1

There is no downgrade of licenses, the license must be in your account. It is impossible to check on the site, write to the support. Well, of course, do not forget to make a backup of the config before doing anything.
UPD: In your personal account, you can import the key to yourself by software id, located in system -> license, then the key appears there

Answer 2

You can also update a pirated one (at home, the license does not crash, in any case)
Please note that when updating, it is possible to redo the config
Yes, and 6 is better than 4