OpenWrt now has a feature called Attended Sysupgrade that removes the friction required to do a sysupgrade. Previously, we needed to take note of the user installed packages on a system so they could be manually re-installed after the sysupgrade, but now the ASU backend dynamically builds an image with our custom packages pre-installed. This … OpenWrt: sysupgrade using Attended Sysupgrade
Starting with OpenWrt 21, a specific list of chipsets starting using DSA (Distributed Switch Architecture) from the Linux kernel instead of swconfig. This significantly changes the way switches and vlan are handled in OpenWrt, and therefore system configurations cannot always be migrated. Trying to run sysupgrade on a chipset that is changing from swconfig to … OpenWrt: upgrading to latest version when chipset migrated to DSA support
If you have neglected to upgrade your OpenWrt router from an older version (such as 15.x) to the latest 19.x release, there are manual steps that must be taken to ensure persistence of any custom configurations and package installations. This article will take you through a manual sysupgrade to 19.x. The reason we are upgrading … OpenWrt: upgrading from older OpenWrt versions to 19.x
Update Jan 2023: I have written an updated article on doing a sysupgrade from older OpenWrt versions to 19.x. If you want to do an in-place sysupgrade of a 19.x or earlier snapshot, use the instructions from the newer article, but selecting a snapshot image instead of a stable release image. Although stables releases of … OpenWrt: Upgrading OpenWrt to the latest snapshot build