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Buffalo WHR-HP-G300N












Not Supported



NOTE: During configuration or flashing a device, the only that should be hooked to the device is the computer and power.


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Serial Num. = ?
FCC ID = FDI-09101621-0
CPU Type = Atheros AR7240
MIPS Rev = ?
CPU Speed = 400MHz
Bus = ?
Flash Type = Serial
Flash Chip = ?
Flash Size = 4MB
Max Firmware Size = ?
RAM Size = 32MB
RAM Chip = ?
nvram Size = ?
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?
boot_wait = ?
bootloader = ?
Flash Card Socket/Type = No
SD/MMC Mod Support = No
MiniPCI slots = No
PoE = No
Power = 5V/2.3A
Color of LEDs = ?
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


Wireless Radio = Atheros
WLAN DSP processor = ?
Antenna Connector Type = 2X2 MIMO RP-SMA Antennas
Wireless Standard = IEEE 802.11b/g/n
WiFi Operating Frequency = 2.412 - 2.462MHz
 802.11n = up to 300Mbps
 802.11g = 6, 9, 12, 18, 24, 36, 48, 54Mbps
 802.11b = 1, 2, 5.5, 11Mbps
Radio cor_rev = ?
Radio Capabilities = ?

Links of InterestEdit

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Fixme This section is in need of cleanup!


Fixme This section is in need of cleanup!



Set your pc to static ip, netmask, gateway

open a cmd window and type arp -s 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

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

JTAG/Serial InfoEdit


JTAG PinoutsEdit
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JTAG RecoveryEdit
Fixme This section is in need JTAG Recovery Instructions!


Serial PinoutsEdit


Hyper terminal Setup in Windows XPEdit
In Windows XP, Click Start Button - All Programs - Accessories - 
   Communication - HyperTerminal
Enter a name for the connection, Click ok
Choose com port you adapter is plugged into, Click ok
 Bits per second = 115200
 Data Bits = 8
 Parity = none
 Stop bits = 1
 Flow control = none
Click ok
Click File - Save As, and select a place to save it to so you 
             don't have to enter the settings again.
Putty Setup in Windows XPEdit
After installing putty, run it
 Serial line = The COM port your using for serial (ie. COM3)
 Speed = 115200
Click on Serial under Connection
 Serial line to connect to = same as above (Serial line)
 Speed (baud) = 115200
 Data bits = 8
 Stop bits = 1
 Parity = None
 Flow control = None
Click Session
 Enter a name for your connection under saved sessions
Click Save
Click Open
Serial RecoveryEdit
Fixme This section is in need of Serial Recovery Instructions!

vlan InfoEdit

Fixme This section is in need of cleanup!



FCC PicturesEdit

Buffalo WHR-HP-G300N FCC a Buffalo WHR-HP-G300N FCC b Buffalo WHR-HP-G300N FCC c

Buffalo WHR-HP-G300N FCC d Buffalo WHR-HP-G300N FCC e Buffalo WHR-HP-G300N FCC f

Buffalo WHR-HP-G300N FCC g Buffalo WHR-HP-G300N FCC h Buffalo WHR-HP-G300N FCC i

Buffalo WHR-HP-G300N FCC j Buffalo WHR-HP-G300N FCC k Buffalo WHR-HP-G300N FCC l


These units not only support DD-WRT, but they ship with it from the factory. You can revert them to Buffalo's proprietary firmware if desired, though that firmware has reduced functionality. Both Buffalo's branded DD-WRT version and the standard DD-WRT distribution version have bugs that lead to crashing under high load, high connection count situations. BitTorrent is particularly problematic. I am not aware of a way to fix this through configuration options and there has been no patch by Buffalo or DD-WRT.

OpenWRT "Attitude Adjustment" V 12.09 works very well on these units and can be flashed from the DD-WRT upgrade page of the web based admin interface using the file openwrt-ar71xx-generic-whr-hp-g300n-squashfs-factory.bin.  OpenWRT works very well and even under abusive loads remains stable. I consider this the preferred firmware for the device.

These routers also have removable antennas and work quite well with enhanced antennas like D-Link's ANT24-0700

Note that all the above information is based on the hardware revision A1 version of the Buffalo WHR-HP-G300N

Tachyon - '13

Hardware ModificationEdit

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