Firmware

DHI_HYGC21B-W2(868)_Eng_MCU_V1.000.0000001.0.R.251211.zip

Dahua firmware released Mar 19, 2026. Microcontroller firmware.

Released: Mar 19, 2026
Version: V1.000.0000001.0.R
Size: 68.2 KB
Hardware: Microcontroller firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: 579f05dab4839a7561e641e78e2323a4
SHA-256: 7b84b052036b74d118cae491f8983119537845fd8c5c7406c08e839df2c9407f

Where it's published

Available from
Dahua
Dahua Download Center
Current
Sold as
- HY-GC21B-W2(868)
V1.000.0000001.0.R · Listed date Mar 19, 2026
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.