Model jcg_jhr-n926r

Flashing via TFTP

• Download the factory firmware image offered above to your Computer.
• Configure a computer with static IP /24 and a TFTP server. On Debian or Ubuntu you can use either the tftpd-hpa or tftpd server packages.
• Rename the downloaded firmware image to `` and place it in the tftp server’s root directory. (If using tftpd-hpa this is /var/lib/tftpboot/; if tftpd, it is /srv/tftp/) You can test that the file is downloadable with tftp localhost and get .
• Connect the computer to one of the router’s Ethernet ports while the router is off. Press and keep pressed the router’s reset button and power it up. After about 7-10 seconds release the reset button. The power LED will flicker rapidly for ~3 seconds, indicating download of the firmware file.
• The router will write the firmware to flash during ~40 more seconds of occasional power LED blinks, and then will reboot by itself, ready for use.

Flash layout

Comments

General

2 digit 7-segment LED display, connected through two daisy-chained 74164 shift registers that are controlled by 3 GPIOs (data, clock, blank).