Thread: Enable features in nuvi 22xx, 23xx, 24xx and 24x5 & 25x5

My nuvi 2455 has firmware 8.20 and has the same problem not detecting traffic antenna after enabling ecoroute.

Could you explain 5.) ?

Thanks.

Originally Posted by lolypop000

5.) Flesh in pre boot and this is all, GTM will work again.

Originally Posted by catymag

To flash in preboot:
read [Only registered and activated users can see links. ]

Thanks a lot. The procedure described in #127 solved the problem.