Since RouterOS 3.25 and 4.0beta3 new SoftID format is introduced. Your license menu will show both the old and the new SoftID. Even by upgrading to a new version, RouterOS will still work as before, but to use some of the new features, LICENSE UPDATE will be necessary. To do this, just click on " update="" license="" key'="" button="" in="" winbox="" (currently="" only="" winbox).="">