You are likely trying to install firmware meant for a different hardware revision (e.g., a 4-channel file on an 8-channel NVR).
: The NVR would analyze signal strength in real-time and automatically suggest the best connection path for each camera to ensure the lowest latency and stable 3MP video streams. One-Key Sync for Relays : A simple "Relay" button in the ja-8108-w firmware
Here's what you should know before looking for a "guide": You are likely trying to install firmware meant