Retail model
VTH2421FB-P
ASM and Santronic lists 9 firmware files for the VTH2421FB-P. 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
- 9
- Newest
- Sep 15, 2025
- Listed by
- ASM, Santronic
- Dahua device IDs
- 10
Vendor notes
- VTH5441 Firmware
- Firmware
- Folder: videovratni/stare_firmwary_nepouzivat/VTH2421FB-P/V4.7
- Folder: videovratni/stare_firmwary_nepouzivat/VTH2421FB-P/V4.510
- Folder: videovratni/stare_firmwary_nepouzivat/VTH2421FW-P/V4.51
- Folder: videovratni/stare_firmwary_nepouzivat/VTH5221DW-S2/Firmware/V4.510_bez_cestiny
- Folder: videovratni/stare_firmwary_nepouzivat/VTH2421FB-P/V4.500
- Folder: videovratni/stare_firmwary_nepouzivat/VTH2421FW-P/V4.5/201120_CZ
- Folder: videovratni/stare_firmwary_nepouzivat/VTH5221DW-S2/Firmware/V4.500
- Folder: videovratni/stare_firmwary_nepouzivat/VTH5421EW-H/V4.500
- Folder: videovratni/stare_firmwary_nepouzivat/VTH5441G/FW 4.500
- Folder: videovratni/stare_firmwary_nepouzivat/VTH2421FB-P/V4.400
- Folder: videovratni/stare_firmwary_nepouzivat/VTH2421FW-P/V4.4/20200221_CZ
- Folder: videovratni/stare_firmwary_nepouzivat/VTH5221DW-S2/Firmware/V4.400
- Folder: videovratni/stare_firmwary_nepouzivat/VTH5241DW-S2
- Folder: videovratni/stare_firmwary_nepouzivat/VTH5421EW-H/V4.400
Firmware
- DH_VTHX421H_MultiLang_SIP_EMEA_V4.810.0000000.1.R.250915.zipDownload
Released Sep 15, 2025 · V4.810.0000000.1.R · 10 devices · Santronic
- DH_VTHX421H_MultiLang_SIP_EMEA_V4.700.0000000.1.R.231130.zipDownload
Released Jan 4, 2024 · V4.700.0000000.1.R · 10 devices · Dahua, Santronic
- DH_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.700.0000000.0.R.230804.zipDownload
Released Aug 4, 2023 · V4.700.0000000.0.R · 10 devices · ASM
- DH_VTHX421H_MultiLang_SIP_V4.510.0000000.0.R.220111.zipDownload
Released Jan 11, 2022 · V4.510.0000000.0.R · 10 devices · ASM, Dahua
- DH_VTHX421H_MultiLang_SIP_V4.510.0000000.0.R.211119.zipDownload
Released Nov 19, 2021 · V4.510.0000000.0.R · 10 devices · ASM
- General_VTHX421H-data_MultiLang_Eng_SIP_PART_V4.500.0000002.0.R.20210520.zipDownload
Released May 20, 2021 · V4.500.0000002.0.R · 10 devices · ASM
- General_VTHX421H_MultiLang_SIP_V4.500.0000000.7.R.201120.zipDownload
Released Nov 20, 2020 · V4.500.0000000.7.R · 10 devices · ASM, ip-phone-forum.de
- General_VTHX421H-data_MultiLang_SIP_PART_V4.410.0000008.0.R.20201027.zipDownload
Released Oct 27, 2020 · V4.410.0000008.0.R · 7 devices · ASM
- General_VTHX421H_MultiLang_SIP_V4.410.0000000.4.R.20200221.zipDownload
Released Feb 21, 2020 · V4.410.0000000.4.R · 7 devices · ASM, TVC
Dahua device IDs in this firmware
Compare these with the updateSerial your device reports. Each one links to every firmware found for that ID.