Not worth it.
You need an SD card with the activation files in them. The minimum cost you will get for one time activation would be 500+ and you will need to activate again if in any case you remove the car battery terminal for servicing.
The minimum cost for the SD is around 3K (yup haram khor log port pe humari hi gaarion se nikal letay hain and then aagay bechtay hain copy kar kar k) which is not worth it since the whole lcd is in Japanese.
Buy a non-android simple LCD for anywhere between 7-15K and enjoy that completely. Audio shops will take these Japanese ones for 1-3K so spend around 10K and enjoy a new LCD with everything DVD,USB,AUX,BT etc etc