Clear the cache for the "System Update" app in Settings -> Apps and ensure you have at least 5GB of free internal storage.
Ensure your battery is at least 30% or higher to prevent the device from shutting down mid-installation.
If your phone is stuck in a boot loop or the wireless update fails, the official is the recommended professional solution. firmware tcl 30 se
Connect your phone to the PC via a high-quality USB cable while following the tool's specific key-combination prompts (usually holding or both Volume buttons ).
Download the tool from the official TCL Support Page and install it on your Windows PC. Clear the cache for the "System Update" app
often host archives of official stock firmware for different regions.
Launch the tool and select your specific model (e.g., or 6165A ). Power off your Connect your phone to the PC via a
Perform a via Recovery Mode (Hold Power + Volume Up) or use the PC tool to "Repair" the firmware. Download fails mid-way