Flashing the with an SPD (Spreadtrum) flash file is a standard procedure for fixing software issues like bootloops, forgotten security codes, or a "dead" device. This device typically uses the Spreadtrum SC6531EFM chipset. Essential Preparation
Only if an official upgrade was released by Nokia. Cross-flashing Android 11 on a device built for Android 9 will break modem functionality. nokia ta 1174 flash file spd