Once you have retrieved the correct file from the official source, follow these steps to execute the upgrade:
Use a smaller USB flash drive (16GB or less) and format it to FAT32 on your computer. Dvr V2.82.r09.20625027 Firmware Upgrade
To upgrade your DVR firmware, Installing an incorrect or incompatible firmware file will permanently break ("brick") your security recorder. Once you have retrieved the correct file from
⚠️ Critical Warning: Never turn off the power or unplug the USB drive while the progress bar is loading. Doing so will destroy the unit. Dvr V2.82.r09.20625027 Firmware Upgrade
Place the downloaded firmware file directly onto the root folder of the USB drive (do not put it in a folder).