I have flashed openwrt in my TL-WR741ND v4, while flashing suddenly power on my area tripped. The router still powers up, only PWR and QSS LEDs(Padlock icon) are light up. I have tried this tftp solution (see link) but nothing happens. The tftp server reverts back to 127.0.0.1(local host) instead of 192.168.0.66. I'm running on Windows 10 64bit desktop PC with LAN port. I'm using this TFTP server v4.60 64bit edition. I hope that this guy will get fixed. Thanks.
tftp solution:
Set up a tftp server on your PC and verify if it works correctly (configuration, permissions, firewalls, etc.)
Rename your target firmware to wr740v4_tp_recovery.bin and copy it to your base folder (by default /tftpboot). I tested with openwrt-ar71xx-generic-tl-wr740n-v4-squashfs-factory.bin r43602.
Set up the following static IP for your PC: 192.168.0.66/255.255.255.0. If you're not sure about the firmware name on a different model, start a packet sniffer on your PC (tcpdump -i eth0 -n -l) and look for the name in the RRQ message.
Preferably disconnect WAN from the router
Connect the PC to a LAN port
Power off the router
Press and hold the reset button
Power on the router
After the leftmost (power) LED and the rightmost (padlock) LED turn on alone in a few seconds, release the reset button
The router will now identify as 192.168.0.86, finish upgrading using its built-in tftp client and reboot in less than half a minute. In case of failure, it retries multiple times and gives up in about 5-10 seconds to resume normal booting. No configuration is erased, so it's safe to experiment. OpenWRT will need to finish initialization on first/second startup if that's what you are installing
(Last edited by aldreezy on 15 Nov 2017, 02:47)