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Link: http://www.indishare.com/gdss86tw2ve0
Firmware Download Primo H4 :
1. Install driver
2. Open Flash Tool.

3. Open Download Agent and select MTK_AllinOne_DA

4. Open scatter_loading and select scatter file
SW---> MT6572_Android_scatter� Primo_E3_V1.0.6_DCC

5. Click Firmware->Upgrade and connect USB cable with mobile (mobile must be off)
6. Then start downloading..
7. When it shows Firmware Upgrade , then installation is completed.

download file now