Rad User Author

Level 1

26 points

NetGear AirCard 340U stops working after upgrade to Sierra

I have a NetGear AirCard 340U. AirCard is an USB modem that allows Internet connection over Cellular/Mobile Broadband airware. It is an awesome modem, or it was.

Until I upgrade my Macbook Pro to Sierra (10.12), AirCard worked flawlessly.

After the upgrade, not so much.

According to the USB list command (

system_profiler SPUSBDataType),

macOS (aka MAC OSX) does properly notice that the device is plugged into the USB port by listing the Sierra Wireless as a manufacturer.

The G3 watcher daemon is up and running, and the AirWatch application is running.

But the OS will not act on the USB device and leaves the AirWatch application unable to detect this plugged-in USB device called NetGear AirCard 340U.

I'm a pretty good kernel developer and am willing to help with this.

MacBook Pro, macOS Sierra (10.12)

Posted on Oct 14, 2016 6:33 PM

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7 replies

Oct 14, 2016 6:39 PM in response to Rad User

"NetGear AirCard 340U stops working after upgrade to Sierra"

Might be corrupted network preferences. It can happen after an upgrade.

Open the Finder. From the Finder menu bar click Go > Go to Folder

Type or copy paste the following:

/Library/Preferences/SystemConfiguration

Click Go then move all the files in the SystemConfiguration folder to the Trash.

Restart your Mac. See if that makes a difference.

Your Mac will generate a new SystemConfiguration folder for you.

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Rad User Author

Level 1

26 points

Oct 14, 2016 6:49 PM in response to Carolyn Samit

I just did a fresh install of macOS (aka Mac OS X 10.12) on my MacBook Pro and reinstalled the NetGear AirCard driver.

This did not fix the problem. Still USB detected, but OS will not allow interaction with this USB device.

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Level 10

210,513 points

Oct 15, 2016 1:28 AM in response to Rad User

You need drivers compatible with Sierra. Have yo went to NetGear's support site?

Maybe this will held if the Netgear card uses the same chipset

Is there any upgrade in Huawei E392u-92 for macOS Sierra 10.12?

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Rad User Author

Level 1

26 points

Oct 15, 2016 8:40 AM in response to lllaass

I just did a fresh install of macOS (aka Mac OS X 10.12) on my MacBook Pro and reinstalled the NetGear AirCard driver.

This did not fix the problem. Still USB detected, but OS will not allow interacti with this USB device., we

NOW, the NetGear (device manufacturer), AT&T (broadband provider), and Apple (OS) are pointing fingers at each other.

(source: https://forums.att.com/t5/Other-Phones-Devices/Aircard-340U-not-working-on-Apple -MacOS-Sierra/m-p/4938689#M77179 )

Is there a way we can break the logjam?

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Level 10

210,513 points

Oct 15, 2016 8:45 AM in response to Rad User

Starting with El Capitan, Apple tightened up signing of device drivers with macOS upgrades. The manufacturer has to provided updated drivers.

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Rad User Author

Level 1

26 points

Oct 15, 2016 8:54 AM in response to Rad User

Apple support merely pointed me to the NetGear support contact at 1(888) 638-4327.

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Rad User Author

Level 1

26 points

Oct 16, 2016 5:52 AM in response to Rad User

Better yet, AT&T provided the AT&T NetBeam driver link to the updated NetGear AirCard 340U mobile broadband USB device drivers.

Once the 'Drivers_10.9' gets installed, it works like a charm.

https://community.netgear.com/t5/AirCard-LTE-Hotspots-Gateways/Aircard-U340-not- working-on-Apple-MacOS-Sierra/m-p/115521…

Thank you so much, NetGear. My problem is solved.

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NetGear AirCard 340U stops working after upgrade to Sierra

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