What causes OTA updates from being installed? The update downloads over and over again and never realy being installed!

Another OTA update 23/07/31 that doesn't install. What is it the reason? And what shall be the reason why the Mini has Android 13 and Widewine L1 and not 50 Pro?

OTA firmware update still don't work well, installation process never ends!

OTA firmware update still don't work, installation of the update never ends!

OTA firmware update process still don't work. Installation of the update never ends! Even after 48 hours!

Again and again the OTA updater doesn't work!