License update required for v4 upgrades within 72 hoursUpgrading procedure for all devices:
If you are currently running an older version of RouterOS, where license can't be upgraded to the new format, you can still upgrade, but absolutely make sure that After successful upgrade click on the "Update License" button in Winbox and make sure the new license is accepted. You will have 72 hours to do this, but it's recommended to do this immediatelly |