Requirements: * Direct ethernet cable connection between PC and LiteStation * Network settings of PC: 192.168.1.254/255.255.255.0 * TFTP client on PC * LiteStation firmware file (e.g. LS2.v1.5.bin for LiteStation2) Recovery procedure 1. First of all, power off the device. 2. Power it on and keep on holding reset button for ~10 seconds (do not hold it longer!) 3. If your device has been already upgraded to v1.5 before, RDY LED should be lit, indicating that device is ready for recovery 4. Make sure LiteStation responds to pinging (ping 192.168.1.20), if it does not, go to step 1 5. rename firmware file into flash_update (not necessary since v1.5 firmware!) 6. using TFTP client software, upload flash_update to 192.168.1.20 in binary mode 7. Signal LEDs will be blinking during firmware upgrade (since v1.5 firmware!) 8. wait for about 7 minutes on LiteStation2 (to be safe) - do not power off the device during procedure! LiteStation5 upgrade takes less time. 9. device should be alive by now Example of steps 4-5: Here is log of the steps 4-5 from Linux terminal: ---------------------------------------------------------------- ubnt@dev:/tmp> ping -c 3 192.168.1.20 PING 192.168.1.20 (192.168.1.20) 56(84) bytes of data. 64 bytes from 192.168.1.20: icmp_seq=1 ttl=128 time=0.285 ms 64 bytes from 192.168.1.20: icmp_seq=2 ttl=128 time=0.296 ms 64 bytes from 192.168.1.20: icmp_seq=3 ttl=128 time=0.333 ms --- 192.168.1.20 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 1998ms rtt min/avg/max/mdev = 0.285/0.304/0.333/0.028 ms ubnt@dev:/tmp> mv LS2.v1.5.bin flash_update ubnt@dev:/tmp> tftp 192.168.1.20 tftp> bin tftp> put flash_update Sent 1965199 bytes in 28.8 seconds tftp> exit ----------------------------------------------------------------