Fenix 5+: unknown USB device and no WIFI networks found

I have some problems with My favorite Fenix5 Plus. I am wondering, IS THIS HARDWARE problem?

1- Unknown USB device with yellow triangle (device descriptor request failed.

Still changing.

Have tried:

  • different computer/ USB 2.0 or 3.0/ 
  • the latest USB drivers. 
  • resetting to factory settings.
  • changing USB mode to MTP.
  • the trouble shooting protocols provided by garmin support webpages, eg power off first and connect to USB meanwhile pressing START/STOP button 30 seconds...

2- no WIFI networks found.

Have tried: 

  • Changing Router to short SSID / b/g mixed / channels 1-11

Now the firmware is 14.0, looks like I cannot get any upgrade with bad USB and wifi connection.

SO is it the common problem for fenix 5/5+ series? and any advice from folks?