Dahua model
VTH2421FB-P-S2/VTH2421FW-P-S2
Dahua lists 3 firmware files for the VTH2421FB-P-S2/VTH2421FW-P-S2. 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
- 3
- Newest
- Aug 15, 2026
- Listed by
- Dahua
- Dahua device IDs
- 9
Firmware
- DH_VTHX6XXX-SX_MultiLang_SIP_Asia_V4.810.0000000.5.R.260803.zipDownload
Released Aug 15, 2026 · V4.810.0000000.5.R · 9 devices · Dahua
- DH_VTHX6XXX-SX_MultiLang_SIP_CEE-Nordic_V4.810.0000000.5.R.260803.zipDownload
Released Aug 15, 2026 · V4.810.0000000.5.R · 9 devices · Dahua
- DH_VTHX6XXX-SX_MultiLang_SIP_EMEA_V4.810.0000000.5.R.260803.zipDownload
Released Aug 15, 2026 · V4.810.0000000.5.R · 9 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.