Show pagesourceOld revisionsBacklinksBack to top × Table of Contents Buffalo WHR-G125 Supported Versions Hardware Highlights Installation Upgrading OpenWrt Hardware Info Photos Opening the case Serial JTAG Specific Configuration Interfaces Switch Ports (for VLANs) Failsafe mode Buttons Tags Buffalo WHR-G125 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. The WHR-G125 is a 802.11g wireless router with a 5 port programmable ethernet switch. Supported Versions Version/Model S/N OpenWrt Version Supported Model Specific Notes v1.0 ? 8.09 Has unpopulated Hirose U.FL connector inside Hardware Highlights CPU Ram Flash Network USB Serial JTag Broadcom BCM3302 V2.9 @ 240MHz 16MB 4MB 4 x 1 No Yes Yes Installation OpenWrt should be installed via TFTP, follow the instructions in the HOWTO section. The correct image for this device is openwrt-brcm-2.4-squashfs.trx . Upgrading OpenWrt This device is supported by sysupgrade. LuCI Web Upgrade Process Browse to http://192.168.1.1/cgi-bin/luci/mini/system/upgrade/ LuCI Upgrade URL Upload TRX file to LuCI Wait for reboot Terminal Upgrade Process Login as root via SSH on 192.168.1.1 Use the following commands to upgrade. cd /tmp/ wget http://downloads.openwrt.org/latest/brcm-2.4/openwrt-brcm-2.4-squashfs.trx sysupgrade openwrt-brcm-2.4-squashfs.trx Hardware Info Architecture MIPS (low endian) Vendor Broadcom Bootloader CFE 1.0.37-1.18 System-On-Chip Broadcom BCM5354 rev 1 CPU Speed 240 Mhz Flash-Chip Spansion S29AL032D90TFI04 Flash size 4 MiB RAM 16 MiB Wireless Broadcom BCM4318 802.11b/g (integrated) Ethernet Broadcom BCM47xx 10/100BaseT Ethernet / RoboSwitch USB No Serial Yes JTAG Yes Photos Front: Back: Opening the case Note: This will void your warranty! Remove the Torx screw under the bottom label Gently tear off the bottom cover Main PCB Serial Pin layout unknown yet JTAG The board has an unpopulated 12-pin Broadcom style JTAG port (JP2). nTRST 1 2 dead TDI 3 4 dead TDO 5 6 dead TMS 7 8 dead TCK 9 10 dead nSRST 11 12 GND How to connect to JTAG interface, and how to reflash the device with JTAG tools See port.jtag for more JTAG details. Specific Configuration Interfaces The default network configuration is: Interface Name Description Default configuration br-lan LAN & WiFi 192.168.1.1/24 vlan0 (eth0.0) LAN ports (1 to 4) None vlan1 (eth0.1) WAN port DHCP wl0 WiFi Disabled Switch Ports (for VLANs) Numbers 0-3 are Ports 1-4 as labeled on the unit, number 4 is the Internet (WAN) on the unit, 5 is the internal connection to the router itself. Port Switch port Internet (WAN) 4 LAN 1 0 LAN 2 1 LAN 3 2 LAN 4 3 In OpenWrt versions up to Backfire 10.03, the first LAN port and WAN are reversed after flashing! To fix the port assignment, apply the following configuration changes: root@OpenWrt:~# uci set network.eth0_0.ports='0 1 2 3 5' root@OpenWrt:~# uci set network.eth0_1.ports='4 5' root@OpenWrt:~# uci commit network root@OpenWrt:~# reboot Failsafe mode If you forgot your password, broken one of the startup scripts, firewalled yourself or corrupted the JFFS2 partition, you can get back in by using OpenWrt's failsafe mode. →failsafe_and_factory_reset Buffalo WHR-G125-specific Unplug the router's power cord. Connect the router's LAN1 port directly to your PC. Configure your PC with a static IP address between 192.168.1.2 and 192.168.1.254. E. g. 192.168.1.2 (gateway and DNS is not required). Plug the power on and wait for the DMZ LED to light up. While the DMZ LED is on immediately press any button (Reset and Secure Easy Setup will work) a few times . If done right the DMZ LED will quickly flash 3 times every second. You should be able to telnet to the router at 192.168.1.1 now (no username and password) Buttons The Bufalo WHR-G125 has two buttons and one switch to toggle router and bridge mode when using the vendor firmware. These buttons can be used with hotplug events. BUTTON Event Router (switch) bridge Reset reset AOSS (AirStation One-Touch Secure System™) ses Tags How to add tags bcm47xx, bcm5354, FastEthernet, 5Port, hwVLAN, 802.11bg, nonDetachableAntenna, 16RAM, 4Flash, MIPS, MIPS32 This website uses cookies. By using the website, you agree with storing cookies on your computer. Also you acknowledge that you have read and understand our Privacy Policy. If you do not agree leave the website.OKMore information about cookies bcm47xx bcm5354 fastethernet 5port hwvlan 802.11bg nondetachableantenna 16RAM 4Flash mips mips32 Last modified: 2019/08/19 13:07by tmomas