It looks like "dsv56rjbk" might be a typo or a very specific model identifier for a piece of hardware, likely a TV control board or a security DVR/NVR, as it resembles common naming conventions for manufacturers like
Wait until the flashing stops or the LED turns a solid color (usually 30–60 seconds). dsv56rjbk firmware best
Most modern DSV-series devices support updates via their web interface. How to Update Hikvision Firmware with HiTools (Easy Guide) It looks like "dsv56rjbk" might be a typo
dsv56rjbk.bin file.