The stock remote control uses specific Infrared (IR) codes mapped to the original provider firmware. Generic custom firmwares may not recognize these keys, requiring you to connect a USB mouse or keyboard to navigate the system after flashing.
Built-in provider scripts will attempt to overwrite your custom software. Use an app manager or ADB terminal commands to freeze or delete system update packages like Ota.apk or Upgrade.apk . zte zxv10 b760hs3 firmware work