You're looking for information on the firmware update for the DVR-5608L-N. Here's what I was able to find:
Rare flash memory timing issue. Fix: Wait 10 minutes. If no change, power cycle the DVR. It may have completed silently. Check the version. If bricked, you may need a recovery image (contact tech support). dvr-5608l-n firmware update
The DVR will scan the USB drive. Choose the correct firmware file (e.g., DVR-5608L-N_V4.05.bin ). You're looking for information on the firmware update
DVR-5608L-N is a common 8-channel digital video recorder platform, often sold under various white-label brands or by manufacturers like Xiong Mai (XM) dvr-5608l-n firmware update