Check if you are on V9.0.10 or higher; some newer versions have locked bootloaders. Config Backup: Download your current config.bin file first.
The issue did not affect routing or Wi-Fi performance, but it made advanced configuration extremely frustrating. zte f670l v90 firmware fixed top
: Older firmware allowed users to "unlock" advanced features (like Bridge Mode ) using browser-based "inspect element" tricks. The v9.0 firmware "fixed" these vulnerabilities, meaning those specific manual bypasses may no longer work unless the unit is downgraded or specifically unlocked . Check if you are on V9