Download H.264 DVR Firmware (2025 Links)

In this list, we’ve included the firmware for H.264 DVRs and H.265 NVRs that are based on HiSilicon chipset such as Hi3520A, Hi3520D, Hi3521, Hi3521A, Hi3531, Hi3531A, Hi3535, Hi3536.

HiSilicon manufactures an array of chipsets used on generic H.264 DVRs or H.265 NVRs that are sold under various brand names. These chipsets are found on AHD DVR, 5MP DVR, 1080P DVR, 4MP DVR, 960H DVR, TVI H.264 DVR, 4MP NVR, hybrids, etc.

Updating the firmware on an H.264 DVR may fix problems such as the DVR not recording, cameras not working or freezing, cameras showing black or disappearing, WiFi not working, not connecting to the phone, DVR rebooting for no reason, no playback, etc.

Check the list below and download the right firmware for your DVR. If you can’t find your DVR model, then open up the DVR’s cover and lookup for the chipset model (as shown in the picture); typically there is a printed hardware model/version on it. Inspect the list below to get firmware that matches your hardware model/version.

Sometimes the seller/dealer changes the brands of the DVRs or uses their own model numbers in an attempt to hide the true origin of the product.

If that’s the case, we recommend contacting your seller and getting the firmware from them (or let them give you the original manufacturer’s model).

Additionally, you can check the sticker on the DVR and google the model number for any possible hints (or try to google the DVR’s chipset).

If you can access your DVR, navigate to the Version section (usually under the Information section) and check the current version as shown in the picture below.
Either way, don’t update the DVR or NVR if you’re not sure about the firmware. Most of the time, nothing will happen when updating with the wrong firmware, the DVR will just refuse it and automatically reboot.

However, in some certain DVRs, especially the older ones, the wrong firmware may go through and the DVR will get bricked.

So, be careful because you may end up damaging the unit and losing the recorded footage. Below is the whole list as sourced from Uniforce.

Note: Read this article on how to update the firmware on an H.264 DVR.

H.264 DVR Firmware List