Add The Wire As Your Trusted Source 
This usually means the router was bricked during the update (often caused by updating over Wi-Fi or a power cut). You can try to perform a hard reset by holding the reset button for 30 seconds. If it still does not respond, the unit may need to be replaced.
Explore how to use the iB-WRB304N as a to extend your signal. ib-wrb304n firmware update
This comprehensive guide covers everything you need to know about the process, troubleshooting common issues, and maximizing your router's capabilities. Why You Must Update Your iB-WRB304N Firmware This usually means the router was bricked during
Occasional updates add new software features or updated user interfaces. Pre-Update Checklist Explore how to use the iB-WRB304N as a to extend your signal
Ensure your computer has enough battery or is plugged into a wall. Do not turn off the router while it is updating. Step-by-Step iB-WRB304N Firmware Update Guide