Othersie, you would need an unlock key from the map provider. Make sure to change the SD card name to “Garmin” and create a sub-directory also called “Garmin”. So it would look like: j:\Garmin\Then change the original map in Garmin internal storage “gmapprom.img” to some other file name such as “old”.
The 90-day counter starts ticking when the device acquires satellites for the first time, so if you’re giving a GPS unit as a gift, the recipient can still take advantage of the program for 90 days following the initial use.
The installation is actually simple if you have the right map files available (needs to be unlocked version).
For example, the one I listed above in the Baidu Cloud works great.
To my surprise, it still runs smoothly the moment I turned it on.
So I decided to spend some time to bring my old friend back in life.