Never use the "Format All + Download" option unless you have a backup of your NVRAM, as this will erase your IMEI and network calibration data.
Disclaimer: Flashing is a low-level operation. Always ensure you are using the correct firmware. The process should be done at your own risk. If you'd like, I can: Help you find the specific for your model Mt6761 Flash Tool
The MT6761 is forgiving if you respect and authentication barriers . For devices launched after 2020, always assume DAA is active. Keep a backup of the original preloader and NVRAM before any write operation. When stuck in BROM mode, testpoints are your best friend. Never use the "Format All + Download" option