Nextcloud 16.0.5 refuses to upgrade

Hi

I am having problems updating from 16.0.5 to anything higher, either via the web updater, or the CLI:

pi@raspberrypi4:/var/www/html/nextcloud/updater $ sudo -u www-data php updater.phar
Nextcloud Updater - version: v16.0.3-3-ga0c2b25 dirty

Current version is 16.0.5.

Update to Nextcloud 17.0.2 available. (channel: "beta")
Following file will be downloaded automatically: https://download.nextcloud.com/server/releases/nextcloud-17.0.2.zip
Open changelog ↗

Steps that will be executed:
[✔] Check for expected files
[✔] Check for write permissions
[✔] Create backup
[✔] Downloading
[✔] Verify integrity
[✔] Extracting
[✔] Enable maintenance mode
[✔] Replace entry points
[✔] Delete old files
[✔] Move new files in place
[✔] Done

Continue update? [y/N] y

Info: Pressing Ctrl-C will finish the currently running step and then stops the updater.

[✔] Check for expected files
[✔] Check for write permissions
[✔] Create backup
[✔] Downloading
[✔] Verify integrity
[✔] Extracting
[✔] Enable maintenance mode
[✔] Replace entry points
[✔] Delete old files
[✔] Move new files in place
[✔] Done

Update of code successful.

Should the "occ upgrade" command be executed? [Y/n]
Nextcloud is already latest version

Keep maintenance mode active? [y/N]
Maintenance mode already disabled

Maintenance mode is disabled
pi@raspberrypi4:/var/www/html/nextcloud/updater $

The updater appears to ‘go through the motions’ of updating, but then I’m still left at 16.0.5.

Any ideas on how to update my 16.0.5 instance? I’ve downloaded the 17.0.2.zip, but am unsure how to install this ‘manually’…

Thanks very much for any help you can provide.

SOLVED by following this: https://docs.nextcloud.com/server/17/admin_manual/maintenance/manual_upgrade.html