on the v1 website, they say that if the serial number has been tampered with, it can't be upgraded. here's my thing, the FCC card on the back came off after the adhesive melted off (texas heat) so i taped the serial number on since i knew i needed it. think they'll consider that tampering? I'm not sure if they keep records, but i sent it in for upgrading back in the early 2000s and i purchased the unit from them in like 98. Reason i'm inquiring about this now is that i need a new windshield suction mount and the rubber power cord is showing it's age... the performance of the unit still gives me plenty of time to slow down to a cop (besides this one time i got nailed going over a hill in the middle of nowhere... 81 in a 70. stupid small town cops).
1.7 / v2.690
edit- and two of arrows have burned out. the front and back... i slow down regardless of direction though.