Firmware

General_ARM9A4-P-W2_433_V1.000.0000001.0.R.260128.zip

Dahua firmware released Feb 6, 2026. Microcontroller firmware.

Released: Feb 6, 2026
Version: V1.000.0000001.0.R
Size: 220.0 KB
Hardware: Microcontroller firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: da05a9cb25317c6993cde166f3a1316f
SHA-256: ee14c8745981b78e333d0c9e3dd95e8b79f76f1e010f4c9c31c064c6776e6b7e
Changelog: Release notes

Where it's published

Available from
Dahua
Dahua Download Center
Current
Sold as
- ARM9A4-P-W2
V1.000.0000001.0.R · Listed date Feb 6, 2026
Vendor link (materialfile.dahuasecurity.com)

Compatible hardware

This is microcontroller firmware in Dahua's MCU upgrade format: it updates a small chip inside a device, such as a PTZ motor controller, door station or access controller, not the device's main system. It has no operating system and no list of supported hardware.