Buffalo WLI-TX4-AG300N

This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 4MB FLASH / 32MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 4/32 warning for details.

1) This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation.
This means that even setting a password or changing simple network settings might not be possible any more, rendering the device effectively useless. See OpenWrt on 4/32 devices what you can do now.

2) OpenWrt support for this device has ended in 2022.
19.07.10 was the last official build for 4/32 devices.

Dual Band Wireless Ethernet Bridge

Manuf/OEM/ODM Gemtek WACR-130N

OEM source code available at: http://buffalo.jp/php/los.php?to=gpl/wireless/gpl_wli-tx4-ag300n_150.tar

Install OpenWrt (generic explanation)


  1. currently, wli-tx4-ag300n-squashfs-sysupgrade images don't work. The root filesystem is not recognized which results in a kernel panic.
  2. wzr-agl300nh-squashfs-sysupgrade images will boot, but you do not get network access.
  3. You can build a patched, bootable image using OpenWrt-ImageBuilder by replacing the partition label “linux” by “firmware” near line 42 in target/linux/ramips/dts/WLI-TX4-AG300N.dts, but results are similar as with the agl300nh image.


  1. Send file via TFTP. (IP:; only accepts oem roms; 4 sec time window)
  2. Set up a TFTP server on you PC and connect a serial cable (with a 3.3V TTL level converter). Hit 2 when prompted during reboot on the console. Specify IP addresses and file name after confirming to flash the firmware.
FIXME Need Flash Layout for this device!

Please check out the article flash.layout. It contains an example and a couple of explanations.

FIXME Need OEM install this particular device!


If you have already installed OpenWrt and like to reflash for e.g. upgrading to a new OpenWrt version you can upgrade using the mtd command line tool. It is important that you put the firmware image into the ramdisk (/tmp) before you start flashing.

LuCI Web Upgrade Process

Terminal Upgrade Process

  • Login as root via SSH on
  • Use the following commands to upgrade.
cd /tmp/
wget http://http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
sysupgrade /tmp/xxx.abc
  • If sysupgrade does not support this router, use the following commands.
cd /tmp/
wget http://http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
mtd write /tmp/xxx.abc linux && reboot

Basic configuration After flashing, proceed with this.
Set up your Internet connection, configure wireless, configure USB port, etc.

FIXME Need config instructions for this device!

The default network configuration is:

Interface Name Description Default configuration
br-lan LAN & WiFi
vlan0 (eth0.0) LAN ports (1 to 4) None
wl0 WiFi Disabled
FIXME Need VLAN mapping for this device!

hardware.button on howto use and configure the hardware button(s).

The Buffalo WLI-TX4-AG300N has two buttons. They are Power and Security. Here, we merely name the buttons, so we can use them in the above Howto:

Power reset
Security ses
Instruction set: MIPS
Vendor: MediaTek
System-On-Chip: Ralink RT2880
CPU @Frq MIPS 4KEc @?MHz
Flash size: 4096 KiB
Flash Chip: Macronix MX29LV320EBTI-70G
RAM size: 32 MiB
RAM Chip: EtronTech EM639165TS-6G x 2
Wireless No1: Ralink RT2850 w/ 2×3 MIMO for 2.4GHz/5Ghz 802.11b/g/n
switch: IC+ IP175C (10/100, VLAN)
Serial: yes
JTAG: Unknown

Note: This will void your warranty!

  • Remove 4 T-8 screws from bottom of case
  • Take care with antenna connections located on side opposite power switch!
  • Rotate top of case to left side when facing front.

port.serial general information about the serial port, serial port cable, etc.

Serial is unpopulated 4-pin header near the reset switch. Pinout is VCC (3.3V, only use to power the RS232 level converter), GND, TX, RX.

Parameters: 57600 bauds, 8 bits, No parity, 1 stop bit.

Photo of PCB with markings

port.jtag general information about the JTAG port, JTAG cable, etc.

JTAG may be located adjacent to the serial near reset switch:

Photo of PCB with markings

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  • Last modified: 2024/02/12 08:58
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