Using OpenWRT with WPJ558

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Compex WPJ558

WPJ558 Datasheet

OpenWrt upstream support

OpenWrt image

Hardware info

Architecture MIPS
Vendor Qualcomm Atheros
Bootloader U-Boot
System-On-Chip AR9558
Switch AR8327
CPU Speed 700 MHz
Flash size 16 MB
Wireless on-board abgn radio, 1 miniPCIe slot for Compex WLE200/300/600/900 series, including 802.11ac radio cards
Ethernet 2 Gigabit ports with Auto MDI-X
PoE Integrated 48V 802.3af (alternative 24V PoE available)
USB With USB Extension (optional), can support 1 × miniPCIe-based USB 2.0 only interface (e.g. 3G modems), 2 × USB 2.0 ports
Other Features Serial Port, JTAG, Reset Button, Surge Arrestor, Watchdog Timer


The board accepts a voltage range of 24-56V on the DC jack connector. A 24V power supply is recommended, as it can be used for all WPJ342/344/531/558 HV/LV boards. A current output of 1A is recommended if an 802.11ac radio card is used.

Powering via 24V POE needs a bridge between two unpopulated headers according to the picture below.

WPJ558 board

WPJ558 board


UART speed is 115200.

Compiling OpenWRT

Please refer to: OpenWRT Compile Instructions

Flash OpenWRT

Please refer to OpenWRT Flash Instruction

U-Boot env

WPJ558 U-Boot env

USB Hack

The board itself has no USB connector, but the USB pins are reachable:

OpenWrt wpj558 foo2.png

Stock Firmware Bootlog

WPJ558 Stock Firmware Bootlog

Stock Firmware System Log

WPJ558 Stock Firmware System Log

Stock Firmware Information

Please contact us to get the firmware login password.

The stock firmware uses on the LAN interface. The DHCP server is disabled on LAN and WAN.

You can enable it by editing /etc/config/dhcp.

To login on the AP LuCI webpage use: admin/password.