Hi.

> I have applied an openwrt image to an WZR-HP-G300NH. While
> configuring I made a mistake in the network configuration and now I
> don't have access to it.

Use failsafe.

> How can I TFTP a new image? I tried using 192.168.1.1 IP but it 
> doesn't accept the image while in boot (replies to pings), the
> buffalo original IP (192.168.11.1) never answers when booting.

This model never answers to pings. The TFTP server is available
for 4 seconds ca. 10 seconds after poweron, time your tftp command
accordingly.

Additionally you might need to set a static arp entry and fix the
ethernet link speed to 100MBit/FD if you have a gigabit nic.

See also http://wiki.openwrt.org/toh/buffalo/wzr-hp-g300h#linux.command.examples

> I managed to get the router in recovery mode using the reset switch, 
> in this mode I can't TFTP a new image.

Correct, since the TFTP service is offered by the bootloader,
not OpenWrt.

> I can telnet to it but I can't use mtd

Why?

> and I don't have access to final filesystem.

Run "mount_root" to access the JFFS2 overlay.



~ Jow
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