No. The hard drive data remains intact. However, settings like motion detection zones, schedules, and network config may revert to defaults – always export backup.
WARNING: Avoid third-party firmware sites. Many offer modified or virus-infected files. Use only official sources:
Approximately 2–3 times per year for critical updates, but the S3/H variant is mature (2021–2024), so updates may slow down.
This is the most common request. The S3 series runs a Linux-based embedded OS. Before attempting to update, you must identify your current Build Date and Kernel Version in the NVR menu (usually under System > System Info). dhi-nvr1108hs-8p-s3 h firmware
⚠️ WARNING: Do not blindly download firmware from third-party forum links. Installing firmware meant for the "S" or "S2" series on an "S3" device will brick the unit.
Where to find the legitimate firmware:
Uploading Firmware to a USB Drive:
Updating via USB:
Remote Upgrade (if applicable):
Here is the most crucial part of the topic: Firmware is not universal for the NVR1108HS series. ⚠️ WARNING: Do not blindly download firmware from
The /H suffix is a hardware revision. Flashing firmware intended for the non-H model, or for an -S2 vs -S3 version, can brick the unit—rendering it unresponsive with a blinking power LED or a blank screen.
Best practices for updating: