: Fixes bugs that might cause sudden speed drops or "exclamation mark" connectivity issues on connected devices.
: Click the Check button. If a new version (e.g., B12 or B15) is available, the system will prompt you. zte mc801a firmware update
: Enter your admin password, which is located on the sticker at the bottom of your device. : Fixes bugs that might cause sudden speed
: Go to Advanced Settings → Update (some versions may list this under Device Settings → Update Management ). B12 or B15) is available