An OpenWRT developer has ported the real OpenWRT, rather than the odd Chinese version, to Linkstar. It’s at Releases · croniccorey/openwrt · GitHub . I got it to work with Seeed’s iinstructions for flashing OpenWRT to eMMC, I could not get it working when flashed to an SD card, perhaps because Linkstar has trouble with some fast SD cards.
Be sure to use a USB A to USB C cable. Linkstar doesn’t know how to get 5V power from a USB C to USB C cable.
WiFi shows some bugs with this release. My system appeared to be stuck at 3dbM power, and one of my Linux laptops received the beacon while the other did not. I have not looked to see if the Chinese distribution has any chipset and WiFi modifications that should be merged into Linux.