If the router asks for a code after a SIM swap, it is a network lock, not a firmware issue. ## Troubleshooting Common Issues Red Signal Light
: If the router supports it, click "Check for Updates" to download and install automatically. huawei b660 firmware
Search GitHub or XDA Developers for "B660 unlock firmware loader." Look for tools like Balong USB Downloader or DC-Unlocker . You will often need a USB Data cable connected to the internal port of the B660 (requires opening the case). If the router asks for a code after
Even with the correct file, things can go wrong. Here is how to fix the most common B660 firmware failures. You will often need a USB Data cable
: As Huawei moved toward newer 4G and 5G models, official support for the B660 shifted. Many enthusiasts turned to third-party tools or repositories like