OpenWrt Wiki] Log into your router running OpenWrt
OpenWRT - Install OpenWRT on Linksys WRT1900AC - YouTube
Amazon.com: Nanopi R5C Mini WiFi Router OpenWRT with Dual PCIe 2.5Gbps Ethernet Ports 1GB LPDDR4X RAM Based in Rockchip RK3568B2 Soc for Smart Home Gateway Support Android Ubuntu (with M.2 WiFi Module) :
OpenWrt Wiki] Sagem F@ST2604
3 Way to Factory Reset OpenWrt Router Without Reset button
OpenWrt Wiki] NETGEAR WNDR3700 and WNDR37AV
How to Factory Default Openwrt Hard reset with telnet command - YouTube
3 Way to Factory Reset OpenWrt Router Without Reset button