Do not panic. The router may be in “recovery mode.” Download the Tenda TFTP Recovery Tool (available on their site) and manually push the firmware via Ethernet using a static IP (e.g., 192.168.0.10). Contact Tenda support if this fails.
Even with careful steps, things can go wrong. Here are solutions for the most common issues when trying to install a new Tenda 4G180 firmware.
