: Ensure the device battery is charged to at least 60% to prevent sudden shutdowns during the process.
: Flash the Android 9 custom ROM ZIP file from your SD card.
Turn your MT6580 smartphone . If the battery is removable, pull it out for 5 seconds and put it back in, but do not turn the phone on.
The official Smart Phone Flash Tool for MediaTek processors. Download a stable v5.x version.
If the phone won't finish booting after 15 minutes, turn it off. Boot into your stock recovery mode (usually by holding Power + Volume Up together) and select Wipe Data / Factory Reset , followed by Wipe Cache Partition . Restart the phone. If you want to move forward with the installation, tell me: What is the exact brand and model of your MT6580 device?
