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NXL

Speco lists 2 firmware files for the NXL. 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
2
Newest
May 23, 2018
Listed by
Speco
Dahua device IDs
2

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.