This listing offering MAIL-IN repair service for RAND MCNALLY TND-T85 T85 TND-550 TRUCK GPS 

After latest corrupted update tnd-t85 or tnd-550 owners may get problem with gps map data.

We are glad to offer gps restoration to previous firmware / software version .

(Latest update will not be installed since not offered from McNally customer service)

We'll provide mail-in instructions after purchase.