Garmin 66S with repeated "Updating GPS Firmware" message and no signal

[Sgt_Strider]

This is the worse possible time for this problem to be happening as I just started my trip. My GPS handheld was working fine until I removed the AA batteries for charging. As soon as I reinserted the batteries, this problem started. 

 

My Garmin GPSMAP 66S suddenly become non-functional with the message "Updating GPS firmware" and going 0% then 1% (see attached screenshot) and the message disappearing and no GPS function.

 

Unfortunately, I don't have a laptop/computer with me as I'm out of the country. I only have an Android and iPhone with me and the Garmin app installed. I don't know how else to troubleshoot and fix the GPS unit. I tried a hard reset and the problem didn't go away. My handheld is using the latest firmware. I think it's 2.70? I recalled updating it before I left for my trip. 

 

Help?

[+Timpat]

I wonder if you can connect your 66S to your Android (with appropriate cabling) to run Garmin Express app while having wifi? Maybe the would allow to force a firmware update again? 

[mariahatkins]

Hello, I think you should use the Garmin Express app on your phone to perform a "Soft Reset." Connect the device to your phone via USB cable if possible. In the app, go to the device settings and select "Soft Reset." 

[+Chris & Martha]

how did you solve the problem????