Your HCVR5104h-V2 uses the same PCB as the S2 series, so you would use the firmware for HCVR5x04h-S2. I had to patch 4 V2's some months ago using the S2 patched firmware, and was the reason I even came to ipcamtalk. Secplus is a godsend for making the issue and resolution so understandable and...