If you have the .bin or .pkg file from ZTE support:
Every 2–4 months for critical bugs, but major Android 13-based UI updates are rarer (once a year). zte mu5001 firmware updated download
If the OTA update fails or your device is stuck in a boot loop, you may need to manually download the firmware file (usually a .bin file) and flash it. If you have the
: Be cautious of third-party firmware links found on forums or social media. Using incorrect firmware can "brick" your device (render it unusable). MU5001 - ZTE zte mu5001 firmware updated download