Buffalo WHR-HP-G300N

bgn (N300)
AirStation High Power N300 Wireless Router & AP
Wikipedia	Buffalo Inc.
InfoDepot Wiki	Buffalo WHR-HP-G300N
WikiDevi.wi-cat.ru	Buffalo WHR-HP-G300N
3rd Party Firmware
dd-wrt	Supported
OpenWrt	Supported
Tomato any flavor	Incompatible
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	Buffalo WHR-HP-G300N
FCC ID	FDI-09101621-0
IC ID	6102A-025
Type	wireless router
CPU1	Atheros AR7240
CPU1 Type	MIPS 24Kc
CPU1 Speed	400 MHz
Flash1 Chip	Macronix MX25L3205DMI-12G
Flash1 Size	4 MiB4,194,304 B <br />32,768 Kib <br />4,096 KiB <br />32 Mib <br />0.00391 GiB <br /> (Serial)
RAM1 Size	32 MiB33,554,432 B <br />262,144 Kib <br />32,768 KiB <br />256 Mib <br />0.0313 GiB <br />
RAM1 Chip	Mira P3S56D40ETP-G5
ETH chip1	Atheros AR7240
Switch	Atheros AR7240
Ethernet Port Count	1-100MbE-WAN 4-100MbE-LAN
Wired Standard	IEEE 802.3i/3u
802dot11 OUI: 00:24:A5 (3 E, 8 W) Ethernet OUI: 00:24:A5 (3 E, 8 W)
Expansion IF types	none specified
Power	5 VDC, 2.3 A
Connector type	barrel
Serial Port (UART)	yes
Other
Default SSID: 0024A5XXXXXX (1 addl. devices)
Manuf/OEM/ODM	Cameo
3rd Party Firmware Support	DD-WRT • (List) , OpenWrt • (List | Dev | DLs)
Retail
Availability	End of Life
End of Life date	2017
FCC approval date	21 July 2009
UPC	747464120249 (UPC DB, On eBay)
ASIN	B002WBV2T8
Country of manuf	China
Physical
Dimensions	5.6 x 4.9 x 1 in.
Radio 1
Chip1	Atheros AR9283
Wireless interface OUI	00:24:A5
Antenna Connector Type	RP-SMA
MIMO status	2x2:2
Wireless Standard	IEEE 802.11b/g/n
802.11n	up to 300 Mbps
802.11g	up to 54 Mbps
802.11b	up to 11 Mbps
WiFi Operating Frequency	2.412 - 2.462 GHz
FCC ID Buffalo WHR-300HP FDI-09101621-0

For a list of all currently documented Atheros (QCA) chipsets with specifications, see Atheros.

For a list of all currently documented Buffalo device with specifications, see Buffalo.

• 300 Mbps - 2SS 2.4GHz 802.11n (40MHz chan.) = N300 class

Overview

The device appears to be a Cameo product.

The default SSID appears to be the MAC address (no delimiters, upper case hex letters).

Links of Interest

On the DD-WRT wiki
On the DD-WRT forums (AR9283-AL1A part mention, high res board shot)
On the OpenWrt forums, and again

This device is apparently now supported in Attitude Adjustment.

On the DD-WRT Supported Devices table

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

Flashing

Flashing dd-wrt

Supported by dd-wrt as of = v24 SP2 - build 13406 - 20091207

Please insert instructions here

Flashing OpenWrt

On the OpenWrt ToH (techdata entry)
On the OpenWrt Wiki
Support started version: 12.09
Current supported version: 17.01.2

Please insert instructions here

Reverting

Reverting dd-wrt

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

JTAG-Serial Info

Serial

Serial Pinouts

See images below

Pictures

User Images

• 

Notes

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