(model 6159K), firmware management typically involves either using built-in wireless updates or official desktop utility tools provided by TCL. 1. Update Methods

Before searching for firmware, verify your device matches these official specifications to avoid using the wrong software: Chipset: MediaTek Helio P22 (MT6762). Operating System: Android 11 with TCL UI. Memory: 4GB RAM / 64GB ROM. Display: 6.52" HD+ Mini-notch. How to Update Your TCL 20B Firmware

It is strongly advised to back up all personal data, as major updates or manual flashing can lead to data loss. Battery Level: Ensure the device has at least 30% battery remaining. Storage Space:

Let me know the exact model number (from Settings → About phone) and your current firmware version.