Allready repair done this device, tried my Step:
Jtag methode will more easy, If your ATF not activated JTAG yet, then you can follow my Step:
1. Download firmware with correct Product Code by Navifirm Plus, save file in Product Path folder, rename it to RM-1030
2. Check your Product Code
here, if your product code shows it V1, then follow these step 3, if not, then download emmc file v2
3. If your device V1,
download this file, for repair via Emmc Tool
4.
Follow this for add file repair via emmc tool, after select your repair file, you will see the Test Point, solder wires correctly
5. Just tips, don't use usb way when connect emmc TP, I have problem in connection using this methode, tried solder all wire with VCC n VCCQ solder too..
6. After correct solder, your device will success repair by EMMC tool, if connection take too long, just close ATF window, n tried again, double check the solder wire too...
7. Affter succes repair via Emmc Tool, then you can flash firmware you download in first step
8. Just tips, make sure your battery charge at least 50%, while you click flash button, hold Vol down + power, then connect via USB..
Hope it can help you, good luck...