If you find a “ready-made” MT6580 Android 9 ROM on forums (4pda, XDA), test on a spare device first – it’s almost certainly a fake or broken build.
Yes, if preloader is intact. Use + original stock firmware (Android 6.0/7.0) from manufacturer’s website. If preloader is corrupt, you need a hardware programmer like Mediatek USB dongle (expensive). mt6580 firmware android 9 install
Moreover, the MT6580 SoC is an older chip, and many device manufacturers have discontinued support for it. This means that there might not be any official Android 9 updates available for devices running on this SoC. If you find a “ready-made” MT6580 Android 9
The progress bar at the bottom will turn yellow as the firmware installs. mt6580 firmware android 9 install
Select , then swipe to wipe. Step 3: Flash the Android 9 Firmware