Ever since the update, I get "network error" any time I try to update my Air 2. Either by using DJI Assist or by the Fly app.

Hi. I am sorry  for the trouble this has caused. With regards to this concern. Kindly please reinstall the DJI Assistant 2 using this link. If issue still persists please try a different computer to isolate the issue. Please keep us posted for further assistance. Thank you.

Try connecting the PC directly to the router via a ethernet cable

lannes Posted at 6-30 22:47
Try connecting the PC directly to the router via a ethernet cable

Did not think of that. Hmm.... Didn't help.

DJI Paladin Posted at 6-30 22:37
Hi. I am sorry  for the trouble this has caused. With regards to this concern. Kindly please reinstall the DJI Assistant 2 using this link. If issue still persists please try a different computer to isolate the issue. Please keep us posted for further assistance. Thank you.

Keeping you posted:

Uninstalled Assist 2.

Downloaded from your link and installed.

Connected via Ethernet instead of wifi.

Same result

Disable any anti-virus application?

Tentoes Posted at 7-1 06:22
Keeping you posted:

Uninstalled Assist 2.

I am sorry to know that the issue still persists. Is it still happening on a different computer? Please keep us posted. Thank you.

DJI Paladin Posted at 7-2 02:34
I am sorry to know that the issue still persists. Is it still happening on a different computer? Please keep us posted. Thank you.

Solved: Needed a different internet connection.

Tentoes Posted at 7-2 06:11
Solved: Needed a different internet connection.

Did you hotspot the phone to the PC ?

lannes Posted at 7-2 08:20
Did you hotspot the phone to the PC ?

Nothing that complicated. I just turned off WIFI on my phone so it would use Verizon 4G data instead of my wifi from "Sparklight." Then I connected up the remote, turned everything on and it updated by itself without any fuss. I'd tried changing everything but ISP, and realized I have two, so I tried the other.

Never encountered anything Sparklight did not let me do before.

Tentoes Posted at 7-2 06:11
Solved: Needed a different internet connection.

That is a great news. Thank you for the update and for your patience.

Tentoes Posted at 7-2 08:52
Nothing that complicated. I just turned off WIFI on my phone so it would use Verizon 4G data instead of my wifi from "Sparklight." Then I connected up the remote, turned everything on and it updated by itself without any fuss. I'd tried changing everything but ISP, and realized I have two, so I tried the other.

Never encountered anything Sparklight did not let me do before.

The issue relates to the stack preference order of the network connections. The Assistant 2 to aircraft connection is a USB network connection. And has its own ethernet connection.

If the preference order in you PC or Mac puts the internet connection to the drone at the top of the stack it makes it the default connection for the internet. So when assistant 2 connects to the drone it forces it as the primary internet connection interface.

Find the DJI Network interface and reduce its priority order in the network preferences.

Or conversely move the order up on your favoured internet link.

Cheers