With the 25.12 release, the luci app to use ASU for upgrades became installed by default in OpenWrt's "vanilla" images the project builds and provides for supported hardware and devices.
Previous OpenWrt releases at least as far back as 21.02 could be equipped with the same degree of ASU support by installing a single package (luci-app-attendedsysupgrade) and its dependencies.
alt Hacker News
With the 25.12 release, the luci app to use ASU for upgrades became installed by default in OpenWrt's "vanilla" images the project builds and provides for supported hardware and devices.
Previous OpenWrt releases at least as far back as 21.02 could be equipped with the same degree of ASU support by installing a single package (luci-app-attendedsysupgrade) and its dependencies.