Also check NV items (Qualcomm QMI/DIAG). A more robust method is patching the QCMAP daemon or modifying the qmi_band_pref table via binary patching if XML is ignored.
Search for "ZTE MC888 firmware patched" on GitHub, XDA, or Telegram channel "ZTE_Modding_World." zte mc888 firmware patched
Manually lock onto the best 5G/4G bands to avoid congestion—crucial if your router keeps jumping to a weaker tower. Bridge Mode Fixes: Also check NV items (Qualcomm QMI/DIAG)