Dahua model
VTH2421FB/FW
Dahua lists 11 firmware files for the VTH2421FB/FW. 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
- 11
- Newest
- Jun 12, 2026
- Listed by
- Dahua
- Dahua device IDs
- 10
Vendor notes
- An earlier build still on Dahua's download server after the download center replaced it
Firmware
- General_VTHX421H_MultiLang_SIP_Asia_V4.810.0000000.4.R.260527.zipDownload
Released Jun 12, 2026 · V4.810.0000000.4.R · 10 devices · Dahua
- General_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.810.0000000.4.R.260527.zipDownload
Released Jun 12, 2026 · V4.810.0000000.4.R · 10 devices · Dahua
- General_VTHX421H_MultiLang_SIP_EMEA_V4.810.0000000.4.R.260527.zipDownload
Released Jun 12, 2026 · V4.810.0000000.4.R · 10 devices · Dahua
- DH_VTHX421H_MultiLang_SIP_Asia_V4.810.0000000.4.R.260527.zipDownload
Released May 27, 2026 · V4.810.0000000.4.R · 10 devices · Dahua
- DH_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.810.0000000.4.R.260527.zipDownload
Released May 27, 2026 · V4.810.0000000.4.R · 10 devices · Dahua
- DH_VTHX421H_MultiLang_SIP_EMEA_V4.810.0000000.4.R.260527.zipDownload
Released May 27, 2026 · V4.810.0000000.4.R · 10 devices · Dahua
- DH_VTHX421H_MultiLang_SIP_Asia_V4.810.0000000.3.R.260410.zipDownload
Released Apr 10, 2026 · V4.810.0000000.3.R · 10 devices · Dahua
- DH_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.810.0000000.3.R.260410.zipDownload
Released Apr 10, 2026 · V4.810.0000000.3.R · 10 devices · Dahua
- DH_VTHX421H_MultiLang_SIP_EMEA_V4.810.0000000.3.R.260410.zipDownload
Released Apr 10, 2026 · V4.810.0000000.3.R · 10 devices · Dahua
- DH_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.810.0000000.2.R.251128.zipDownload
Released Nov 28, 2025 · V4.810.0000000.2.R · 10 devices · ASM, Dahua
- DH_VTHX421H_MultiLang_SIP_EMEA_V4.700.0000000.2.R.240801.zipDownload
Released Aug 12, 2024 · V4.700.0000000.2.R · 10 devices · 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.