Router

PQI Air Pen

Projects for this device

Replacement firmware

OpenWrt

Replace router software with a customizable system for network controls and community packages.

HardwareA400

How to get started

Follow the guide for your exact router version. The first installation may use its web interface, recovery mode or a serial connection.

Setup: Firmware replacement; route varies by router
You’ll need: Exact hardware revision, an appropriate OpenWrt release and its model-specific installation guide.

Open hardware recordopenwrt.org

Original project github.com

Recorded configuration: 8 MB flash; 32 MB RAM

Device support in source: Retired; check the documented hardware and older release resources.
First installation: TFTP generic

Sources

PQI Air Pen — Project reference (openwrt.org) ↗

Features & details

Check the project and hardware shown for each feature.

Device details

pqi air pen — device documentation (github.com)Device details — Source documentation (openwrt.org)

Hardware revision: A400

OpenWrt · A400

OpenWrt · A400 — Source documentation (openwrt.org)

Installation routes recorded: TFTP generic
Recovery routes recorded: U-Boot TFTP recovery
Availability recorded by source: Available 2019

Hardware details

Documented hardware

pqi air pen — device documentation (github.com)Documented hardware — Source documentation (openwrt.org)

Processor: Atheros AR9331
Hardware revision: A400
Flash: 8 MB
Processor: Atheros AR9331
Memory: 32 MB
Hardware revision: A400

Security

Saved scan 18 Oct 2026

No device-specific advisory matched our saved CVE research.

Check security advisories for this device · CVE.org