You can perform the official biennial update only during the specified month and year based on the last two digits of your USDOT number. On the other hand, an “edit” is an update made any time before the official biennial update is due. For example, filing your biennial update in January when it’s due in March of the same year is considered an “edit” and not the official biennial update. In this case, filing too early is not advisable.