Dahua model
VTO6521K
Dahua lists 5 firmware files for the VTO6521K. 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
- 5
- Newest
- Oct 7, 2026
- Listed by
- Dahua
- Dahua device IDs
- 1
Firmware
- DH_VTO6XX1K_MultiLang_PN_SIP_EMEA_V4.600.0000000.6.R.260625.zipDownload
Released Oct 7, 2026 · V4.600.0000000.6.R · 1 device · Dahua
- DH_VTO6XX1K_MultiLang_PN_SIP_Asia_V4.600.0000000.5.R.250722.zipDownload
Released Aug 20, 2025 · V4.600.0000000.5.R · 1 device · Dahua
- DH_VTO6XX1K_MultiLang_PN_SIP_CEE-Nordic_V4.600.0000000.5.R.250722.zipDownload
Released Aug 20, 2025 · V4.600.0000000.5.R · 1 device · Dahua
- DH_VTO6XX1K_MultiLang_PN_SIP_EMEA_V4.600.0000000.5.R.250722.zipDownload
Released Aug 20, 2025 · V4.600.0000000.5.R · 1 device · Dahua
- Customer_VTO6XX1K_Eng_PN_SIP_EMEA_V4.600.10SJ000.0.R.250212.binDownload
Released May 28, 2025 · V4.600.10SJ000.0.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.