Model comtrend_vr-3025un
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
| Region |
Label |
0x000000-0x010000 |
CFE |
0x010000-0x7e0000 |
linux |
0x7f0000-0x010000 |
nvram |