If your TCL 20B is stuck on the logo screen (boot loop).
Click on the button next to the "Scatter-loading File" field. Navigate to your extracted firmware folder.
Solving bugs, freezes, or slow performance. Firmware TCL 20B
Once the computer detects the MTK Preloader port, a red progress bar will appear at the bottom of the tool, followed by a yellow flashing bar. You can now release the volume buttons.
Leftover cache data from the old operating system is conflicting. If your TCL 20B is stuck on the logo screen (boot loop)
Download and install the latest MTK USB All Driver package and MediaTek VCOM drivers.
Meet Alex. Alex loved his TCL 20B. It was his reliable companion for scrolling through social media, snapping photos of his lunch, and texting friends. But one Tuesday evening, the romance hit a rough patch. Solving bugs, freezes, or slow performance
If you encounter issues during the process, refer to these quick solutions:
Download the Mobile Upgrade tool from the official TCL support website. Install: Install and launch the tool on your Windows PC. Select Model: Select your device model (TCL 20B / T767H).
The partition layout on the phone differs from the firmware file layout.
Launch the SP Flash Tool executable on your Windows computer. Inside the application interface, click on the button located next to the Scatter-loading File field. Navigate into your extracted firmware directory and select the scatter file. The interface will populate with system partitions including boot , system , and recovery . Step 3: Select the Flashing Parameters