Firmware

General_ARM9A4-W2_433_V1.000.0000001.0.R.251222.zip

Dahua firmware released Jan 15, 2026. Microcontroller firmware.

Released: Jan 15, 2026
Version: V1.000.0000001.0.R
Size: 138.0 KB
Hardware: Microcontroller firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: fc2e3348340591a91efe771ce4e02e64
SHA-256: 761cbfcd276cd2982db25efd4b8380864a5bf283d82072b5a60ddfd06b79a3e6
Changelog: Release notes

Where it's published

Available from
Dahua
Dahua Download Center
Current
Sold as
- ARM9A4-W2
V1.000.0000001.0.R · Listed date Jan 15, 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.