Hello Alzhao,

Thanks for your quick reply; so it would be OpenWrt 19.06 files. Thank you for the info

Indeed, my phone can do tethering with EasyTether. I think it will be redundant to have the router doing the same thing. By the way EasyTether Bluetooth method is a bit hectic, difficult to connect to PC wit Galaxy S20. I think there was an option with EasyTether to change to the DNS service thus won’t be blocked by ‘Sprint’. That might had stabilized the Bluetooth connection.