Flashing official stock firmware serves several maintenance and recovery purposes:
SP Flash Tool (Smart Phone Flash Tool) is the standard software used for MediaTek-based smartphones. Always use the latest stable version compatible with MT6771. nokia ta-1092 firmware
Ensure you download the correct flash file containing the prog_emmc_firehose_8917 programmer file, the .xml rawprogram file, and the patch files. Step-by-Step Nokia TA-1092 Firmware Flashing Guide the .xml rawprogram file