Monday, 8 February 2016

UniFi Recover via TFTP

Preperation steps

  1. Download the firmware and save to Desktop: https://s3-eu-west-1.amazonaws.com/router-firmware/ub-unifiuap.bin

  2. Unplug the ethernet from the Unifi AP
  3. Press and hold in a paper-clip or other object in to the Reset hole (next to the Ethernet plug) on the AP. Make sure you can feel it pushed in.
  4. Plug the Ethernet cable back in whilst still keeping the reset button held in.
  5. After around 25 seconds the light on the Unifi will go between flashing orange then green, orange then green etc. This means the AP is in upgrade mode.
  6. Set your computer's ethernet card to use a static IP of 192.168.1.25, subnet of 255.255.255.0 and gateway of 192.168.1.20
  7. Plug the LAN cable from the Unifi PoE adapter in to your computer.

Windows:

Please install the following TFTP software - http://kin.klever.net/dist/pumpkin-2.7.3.exe
Open the Pumpkin TFTP application and click on "Put File". In "Local file" choose the firmware file you downloaded In the "Remote host" field enter 192.168.1.20 - then click OK.

MAC:
Open Terminal from the Utilities folder and copy and paste each line below (ensuring you press Enter after each line)
  • connect 192.168.1.20
  • binary
  • rexmt 1
  • timeout 60
  • put [name of firmware file you downloaded]


You should now have some indication of the file being transferred. The firmware on your AP will be upgraded and the device will automatically reboot once done.

Re-connect the LAN cable from the Unifi POE adapter in to your broadband router. Remember to set your PC's network IP back to what it was before (DHCP etc).