Adobe AIR application update failed

Hey guys,

     Been having problems trying to update our AIR applications via its native processes.
Wondering if there's a current trend of runtime/SDK versions that are supported/deprecated and abandoned.
We've been using AIR 31 at the moment, because of known issues with 32.

During the standard app update, it fell over. Not sure if anyone else is having the same issue.
Wondering if this is related to the 404 errors in the recent app installation threads.
I've got a log and wondering if the hosted URLs aren't supported anymore within the airdownload subdomain:

[2019-08-07:14:26:00] Bootstrapper begin with version 31.0.0.96 on Win x86

[2019-08-07:14:26:00] Installed runtime (30.0.0.107) located at c:\Program Files (x86)\Common Files\Adobe AIR

[2019-08-07:14:26:00] Launching subprocess with commandline "Adobe AIR Application Installer.exe" "C:\Users\User1\AppData\Local\Temp\AIRFF74.tmp\iVacation"

[2019-08-07:14:26:00] Application Installer begin with version 30.0.0.107 on Windows 10 x86

[2019-08-07:14:26:00] Commandline is: C:\Users\User1\AppData\Local\Temp\AIRFF74.tmp\iVacation

[2019-08-07:14:26:00] Installed runtime (30.0.0.107) located at c:\Program Files (x86)\Common Files\Adobe AIR

[2019-08-07:14:26:01] Validating app in folder C:\Users\User1\AppData\Local\Temp\AIRFF74.tmp\iVacation

[2019-08-07:14:26:02] Application signature verified

[2019-08-07:14:26:02] Unpackaging/validation complete

[2019-08-07:14:26:02] Application has unknown namespace http://ns.adobe.com/air/application/31.0. Attempting immediate runtime update

[2019-08-07:14:26:02] Begin runtime update download from https://airdownload.adobe.com/air/3/windows/x86/add/31.0/update

[2019-08-07:14:26:02] Download destination is C:\Users\User1\AppData\Roaming\Adobe\AIR\Updater\Update

[2019-08-07:14:26:02] Unpackaging https://airdownload.adobe.com/air/3/windows/x86/add/31.0/update to C:\Users\User1\AppData\Roaming\Adobe\AIR\Updater\Update

[2019-08-07:14:26:04] Received download status 404

[2019-08-07:14:26:04] No Immediate update available

[2019-08-07:15:10:31] Application Installer end with exit code 7

[2019-08-07:15:10:31] Subprocess Application Installer failed (7)

[2019-08-07:15:10:31] Bootstrapper end with exit code 7

Any thoughts on this is much appreciated.