Help me! I want to install firmware openWRT for D-link 2740 NRU/C5 . Tried to install ready firmwares of openwrt from models 2650, 2640. Changed in hex-editor of a line at the beginning of a code, the firmware was accepted by a router (was written to wait for 2 minutes and then the device shall reboot). The router rebooted, but as a result there was an original firmware. Everything did through via fallback recovery.