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Retail model

VTH5221DW-S2

ASM and Eltrox and Global DS lists 10 firmware files for the VTH5221DW-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
10
Newest
Mar 3, 2023
Listed by
ASM, Eltrox, Global DS
Dahua device IDs
10

Vendor notes

Firmware

Dahua device IDs in this firmware

Compare these with the updateSerial your device reports. Each one links to every firmware found for that ID.