You can use ASU to re-image the device, say LuCI Attended Sysupgrade or owut. They retain your config, but build the full image with all packages included from scratch.
LuCI Attended Sysupgrade support thread
Owut: OpenWrt Upgrade Tool
You can use ASU to re-image the device, say LuCI Attended Sysupgrade or owut. They retain your config, but build the full image with all packages included from scratch.
LuCI Attended Sysupgrade support thread
Owut: OpenWrt Upgrade Tool