Buffalo WHR-HP-G300N

On the DD-WRT wiki On the DD-WRT forums (AR9283-AL1A part mention, high res board shot) On the OpenWrt forums On the DD-WRT Supported Devices table

Listed on the 'Buffalo AirStation' page on Wikipedia (note: listed as having 8MB RAM)

Specs
Platform Serial Num. = ? FCC ID = FDI-09101621-0 Industry Canada ID = 6102A-025 CPU Type = Atheros AR7240 MIPS Rev = ? CPU Speed = 400 MHz Bus = ? Flash Type = Serial Flash Chip = Macronix MX25L3205DMI-12G Flash Size = 4 MB Max Firmware Size = ? RAM Size = 32 MB RAM Chip = Mira P3S56D40ETP-G5 nvram Size = ? ETH chip1 = Atheros AR7240 Switch = Atheros AR7240 (SoC) Port-based vlan = ? 802.1q vlan = ? Ethernet Port Count = 1-10/100-WAN 4-10/100-LAN Wired Standard = IEEE 802.3/3u Ethernet interface OUI = none specified boot_wait = ? bootloader = ? Flash Card Socket/Type = No SD/MMC Mod Support = No Expansion IF types = No PoE = No Power = 5 VDC, 2.3 A Connector type/size = Barrel plug LEDs/Color = ? Size = 5.6 x 4.9 x 1 in. USB = No Serial Port = 1 JTAG Port = ? Supported by TJTAG/Version = ? Supported by dd-wrt as of = v24 SP2 - build 13406 - 20091207 dd-wrt K2.4 Support = ? dd-wrt K2.6 Support = ? Special Features = Offical DD-WRT build on buffalo support website Radio Wireless Radio = Atheros AR9283 WLAN DSP processor = Atheros AR9283 Wireless interface OUI = none specified Antenna Connector Type = 2X2 MIMO RP-SMA Antennas MIMO status = 2x2:2 Wireless Standard = IEEE 802.11b/g/n 802.11n = up to 300 Mbps 802.11g = 6, 9, 12, 18, 24, 36, 48, 54 Mbps 802.11b = 1, 2, 5.5, 11 Mbps WiFi Operating Frequency = 2.412 - 2.462 MHz Radio cor_rev = ? Radio Capabilities = ? Other Default IP address = ? Default login user = ? Default login password = ? Default SSID = ? OEM = ? 3rd Party Firmware Support = ?

Reverting
Per LOM

Set your pc to static ip 192.168.11.2, netmask 255.255.255.0, gateway 192.168.11.1

open a cmd window and type arp -s 192.168.11.1 ro:ut:er:ma:c

open your tftp program, enter filename, destination ip and set retries to 100. Don't start the tftp transfer yet. (Destination is the router at 192.168.11.1)

Power on the router, wait 5 seconds and then start the tftp transfer at the pc. It will normally take another 5–10 seconds before the transfer starts.

The above works for WHR-HP-G300N which is basically the same router as WHR-HP-GN