To enter the mode required for flashing, turn off your device, then hold Power + Volume Down simultaneously until "Fastboot mode" appears on the screen.

Ensure your Nokia C31 has at least 50% to 60% battery life. If the phone shuts down mid-flash due to power loss, it can permanently damage the motherboard. 2. Backup Your Data

If your device is stuck in a boot loop or needs a complete reinstall, you will need the stock ROM and specific PC tools. Nokia C31 user guide: Update your phone software - HMD

Are you experiencing issues with your Nokia C31 smartphone, such as software glitches, freezing, or performance issues? If so, you may need to update or reinstall the firmware to resolve these problems. In this write-up, we will provide a step-by-step guide on how to download and install the Nokia C31 firmware.

Disclaimer: Flashing firmware will wipe all data. Back up your files before proceeding. Flashing Custom Firmware on Nokia | Step by Step Guide

Flashing will completely wipe all personal information from the device memory.