![]() If you’re unfamiliar with how to format a USB in FAT32, this video provides the steps:Ģ)The file name must remain exactly as listed in the article for the DVR to recognize it as an update. ![]() In case it helps, here is a link to a Youtube video demonstrating the process: If the file was downloaded using the Microsoft Edge browser, this will cause the file to be converted to a text file, which can’t be read by the DVR. We recommend using a different browser for this process. Some customers have reported issues when downloading this file using the “Microsoft Edge” browser. Note: to perform this process, you will want to use a USB 2.0 drive ideally 16 GB or less in size, formatted in FAT32. (Please save the upgrade file rootfs-3520dv400 in the root directory, not save it under any other folders.) You can follow up the guide below to upgrade the DVR:ġ) You needn’t open the upgrade file, please directly download the upgrade file and save it to your U-disk. If your DVR’s label is lost, please go to DVR’s Main Menu – Information – System to take a photo to us, we will send the correct upgrade file to you. ![]() You can find your DVR’s model number on the label at the bottom of your DVR.
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