There is a 100% working solution by jtag. You can repair any 3g/3g+/rns-850 even if complet dead (no hardware fault)
First of all you need this jtag tool;
diygadget.com/tiao-usb-multi-protocol-adapter-jtag-spi-i2c-serial.html
Jtag pinout picture;
mmi3g_jtag_connection.JPG
So if anyone need full information and all tools, can contact me pm (full pack with everything for jtag coast arround 1k eu)
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