Hi Godzilla Thank you for pointing out to this error in the manual of the Classic Flarm. We will update the manual. There is no general expiration of firmware end of March 2017. However, the rolling update plan requires you to update your device at least every 365 days with the most recent release available on https://flarm.com/support/firmware-updates/ It is your decision when you do it as long as you update at least every 365 days. Current version is 6.07. Version 6.05 was published Dec 4, 2015 In case you still use 6.01 or anything before, you did not update every 365 days. In case of questions, contact info@flarm.com Regards, Andrea