tried to update via newest GW 3.7.2 (launcher 4.2.bat), it goes all well untill i want to update via system update in de GW mode. i keep getting stuck after the system update, i get a black screen and GW mode doesn't start anymore. after i do a new formatt of the SD card i can go back again to GW mode, but i keep getting the system update error (black screen again after update via system updatet tab in the GW mode. is there another way? did i do something wrong?