failsafe


cd /tmp
wget http://192.168.1.100/openwrt-ar71xx-tl-wr741nd-v1-squashfs-sysupgrade.bin
sysupgrade -v -n openwrt-ar71xx-tl-wr741nd-v1-squashfs-sysupgrade.bin


https://forum.openwrt.org/viewtopic.php?pid=140336#p140336