Dahua model
VTH8A21KMS-CW
Dahua lists 2 firmware files for the VTH8A21KMS-CW. This is the retail model name. Inside the firmware, Dahua uses its own device IDs, listed below, which can lead you to more compatible firmware.
- Firmware files
- 2
- Newest
- Oct 5, 2026
- Listed by
- Dahua
- Dahua device IDs
- 1
Vendor notes
- An earlier build still on Dahua's download server after the download center replaced it
Firmware
- DH_VTHXAX1_MultiLang_SIP_V4.400.0000001.3.R.20260728.zipDownload
Released Oct 5, 2026 · V4.400.0000001.3.R · 1 device · Dahua
- DH_VTHXAX1_MultiLang_SIP_V4.400.0000001.2.R.20230308.zipDownload
Released Mar 8, 2023 · V4.400.0000001.2.R · 1 device · Dahua
Dahua device IDs in this firmware
Compare these with the updateSerial your device reports. Each one links to every firmware found for that ID.