Hi ,
i'm stuck with a 1390 nuvi--what firmware i should have for a 105-01554-30 ver1 PCB PN -(-it's bricked no load on sd card method or Kunix method(i have preboot but just 20-30 sec window on usb connection) maybe i must desolder the SD1N2C1-2G reflashing outside motherboard and resolder).
any suggestions ?

Thanks.