Firmware

General_ARD2251E-W2_868_V1.000.0000009.0.R.260306.zip

Dahua firmware released May 7, 2026. Microcontroller firmware.

Released: May 7, 2026
Version: V1.000.0000009.0.R
Size: 1.8 MB
Hardware: Microcontroller firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: 53e5f61aff305c8e079d505b3a03031e
SHA-256: 0b4367eebe66ef26bce197ed9be5567a2b59483592716bee580241cf857029c3
Changelog: Release notes

Where it's published

Available from
Dahua
Dahua Download Center
Current
Sold as
- ARD2251E-W2(868)
- ARD2251E-W2(868V)
V1.000.0000009.0.R · Listed date May 7, 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.