Thread: Using TMC in Garmin nuvi for free

How to use Modified Jetmouse, only to EXTEND an existing (non-Life Time) subscription:
1. Run the "jmgkg13modTMCExp.exe"
2. Enter traffic receiver id.
3. select custom map id
4. In "select Map Product" field, select "Custom mapset". Open "Garmin_Week_calculator_TMC_MOD.XLS". Type number in "Enter Week Number". "Real Last working Day" field will give you the date when your new subscription would expire. Type "Enter week number" in kg.
5. Use generated number in your GPS to extend your subscription.