If you find a “MT6580 Android 9 firmware” online (on sites like NeedROM, Hovatek, or XDA), it is almost certainly one of three things:
The is a 32-bit, quad-core Cortex-A7 chip manufactured on a 28nm process . It was launched in 2015-2016, originally designed for Android 6.0 (Marshmallow) or, at best, Android 7.0 (Nougat) . mt6580 firmware android 9