Do server edition update itself

do server edition update itself during a year of license validity, or is there any way to update it?

You are responsible for updating the server edition - I’m not an expert, so how you do that I’ll leave to more knowledgeable members to explain.

https://www.manager.io/server/installation/

in the ubuntu you have the procedure for updating in the end
for windows i think is just ovewrite the old files with the new ones