Thread: Using TMC in Garmin nuvi for free

Originally Posted by lolypop000

If you unlock GTM21 with your nuvi and add GTM21 on another nuvi you must unlock TMC again on another nuvi.
If you unlock GTM25 on your nuvi and add GTM25 on another nuvi you dont need to unlock again becouse subscription is stored in antenna and will work on all nuvi.

I check on Nuvi 765 - any GTM21 reciever with own unlocked subscriptions work with any Nuvi without problem! I am sure that GTM intentionally designed to be a stand-alone unit...