How To Update Firmware, FlashtoolMTK Android (Sp flash tool ) tutorial Complete Guide
How To Flash/Update MTK Android SP-Flash Tool
Download All Version SP Flash TOOL
1. Install driver
2. Open Flash Tool.
3. Open "scatter_loading" and select scatter file
(Primo H4 Firmware>Primo H4 software>MT6580_Android_scatter)
4. Click "Firmware Upgrade" then select "Download" and then connect USB cable with mobile (mobile must be off)
5. Then start "Downloading/Flashing Firmware"
6. When it shows "Download Ok" it means the installation/flashing firmware is completed.