I generate an activate code using the number "1527" , this number is a random number, I thought if it doesn't work with 28992 lets try with another, and it gives me back validation until 06-November-2023. I use the keygen with 4 digit, not the v1.5 with checksumfix.

The TTN(US) 28992 / 0 / 0 / 1 , don't work for me. Only the Navteq 28935 / 0 / 0 / 1 is LifeTime subscription.

I use it in Nuvi 760 with GTM 20.