Unable to upgrade to OTA-2 Focal

[dln949]

Here is the terminal output, the process gets stuck at the last step as shown:

main1@system1:~$ adb shell
phablet@ubuntu-phablet:~$ sudo system-image-cli -v -p 0 --progress dots
[sudo] password for phablet: 
[systemimage] Jul 31 19:09:42 2023 (279787) running state machine [20.04/arm64/android9plus/stable/sargo]
[systemimage] Jul 31 19:09:42 2023 (279787) Looking for blacklist: https://system-image.ubports.com/gpg/blacklist.tar.xz
[systemimage] Jul 31 19:09:43 2023 (279787) [0x7e3b102370] Requesting group download:
	https://system-image.ubports.com/gpg/blacklist.tar.xz -> /var/lib/system-image/keyring.tar.xz
	https://system-image.ubports.com/gpg/blacklist.tar.xz.asc -> /var/lib/system-image/keyring.tar.xz.asc

[systemimage] Jul 31 19:09:43 2023 (279787) Allow GSM? No
[systemimage] Jul 31 19:09:43 2023 (279787) [/com/lomiri/applications/download/0ca26879192f4e94aa67f3cefcbf4ca3] Running group download reactor
[systemimage] Jul 31 19:09:43 2023 (279787) self: <LDMDownloadManager at 0x7e3b102370>, self._iface: <Interface <ProxyObject wrapping <dbus._dbus.SystemBus (system) at 0x7e39de8590> :1.646 /com/lomiri/applications/download/0ca26879192f4e94aa67f3cefcbf4ca3 at 0x7e39ee3340> implementing 'com.lomiri.applications.GroupDownload' at 0x7e39ee3370>

[lduboeuf]

@dln949 Which Device ?
No success with system settings update ?
No success with the installer ?

[dln949]

@lduboeuf Pixel 3a.

I don't know what to say: After a number of restarts done out of frustration, now it worked. I have a theory, but I wan't careful enough to watch what I was doing so I can't say this is a for sure thing: I THINK it worked when I turned off the VPN on the device.