AirCard 340U Firmware Update Fails on Windows 10 Pro
I tried to follow the instructions to upgrade the firmware for this modem. On Windows 10 Pro (10.0.10586 Build 10586), however, the AT&T AllAccess app (Version 188.8.131.521) has no "Update" tab.
So, I downloaded ATT_AC340U_eMR2_upgrade_Win.exe to my computer. I select "Run as Administrator" and for seven minutes I get a popup window from NetGear that says "Switching device to boot & hold mode..." and has a timer (which is not frozen) and a percentage indicator.
While the app is running the AT&T All Access app under Settings.About says all Device Information is N/A and the AirCard itself displays the AT&T globe logo on its screen. This window appears for about seven minutes, the message never changes, the percentage never budges from 0%. After about seven minutes (7:02), the window disappears.
When I return to the AT&T AllAccess app and check my firmware verision (under 'Settings.About') it still says it is N/A. At this point, my system considers the AirCard Unspecified Device that needs troubleshooting. After waiting 30 minutes, the status remains the same.
If I restart my computer or even unplug and replug the AirCard, the top line of the AirCard displays signal bars, "4GLTE" logo and "AT&T". The second line says "Ready to connect". The AirCard is recognized as a modem, but AT&T AllAccess Settings.About says the firmware is still SWI9XC_01.05.11.52.
(There is also no way to pin 'Settings.About' within the AT&T AllAccess app, but this is just a UI issue)
What can I do to upgrade the firmware on my AirCard 340U?