i have nuvi 52, suddenly once i connected to PC it say need to format the ROM, and i did. since i can access GPS it self, but no sound or other, i had installed map on SD card and worked.

so i tried the GarminCure3, and now it is totally not working. just boot in garmin logo, tried to rest it it dose not work. i hold lower right nothing happen. i just can keep doing GarminCure3 by cure and original, if cure i can see the ROM, once original nothing happen

also used RMPrepUSB_Portable,. nothing.