There's an issue on MyPhone A858 Duo that commonly known as bootloop. Bootloop is when your MyPhone A858 Duo keeps on restarting and restarting. Even if you try the Hard Reset method, it doesn't fix the problem. So when you Hard Reset MyPhone A858 Duo and doesn't solve the bootloop issue on your MyPhone A858 Duo, your last resort will be to flash or update it. How to flash it? Use SP Tool to flash it.
How To Flash MyPhone A858 Duo Using SP Flash Tool
1. Open SP Flash Tool.
2. Press Scatter-file and look for the MT6575 Android scatter.
3. Press firmware upgrade.
4. Power off the phone. Press Volume Down then insert USB cable.
5. Install drivers
6. After success installing drivers, the software will begin to run.
7. Flashing is finish when you see the fifth image appeared up.
8. Power on the unit. Wait for about 1 minute.Smile.
Download all files HERE.
