Firmware

DHI_HYSA21A-W2(868)_Eng_MCU_V1.000.0000007.0.R.20251106.zip

Dahua firmware released Nov 11, 2025. Microcontroller firmware.

Released: Nov 11, 2025
Version: V1.000.0000007.0.R
Size: 105.0 KB
Hardware: Microcontroller firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: 5880e94df8303e66f6d3b9161472439a
SHA-256: dde92cad959dcf1eac2b7ca77cca1a1fb93837a2fbaf73a0f8bcbbdfc0a253db

Where it's published

Available from
Dahua
Dahua Download Center
Current
Sold as
- HY-SA21A-W2(868)
V1.000.0000007.0.R · Listed date Nov 11, 2025
Vendor link (materialfile.dahuasecurity.com)

Compatible hardware

This is microcontroller firmware (an Intel HEX image): 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.