Here's the Starmobile Diamond Firmware just for you. Credits to the original poster and uploader.
INSTRUCTIONS:
1. Open SPFlashTool.
2. Click Scatter loading.
3. Locate or browse Diamond_stock rom.rar
4. Choose MT6589_Android_scatter_emmc.txt.
5. Click Download.
INSTRUCTIONS:
1. Open SPFlashTool.
2. Click Scatter loading.
3. Locate or browse Diamond_stock rom.rar
4. Choose MT6589_Android_scatter_emmc.txt.
5. Click Download.