The problem of this phone is logo hang, i try many times to reformat in any form but not success, there are many issue it comes to data lines, may last result is the ROM problem. I found it is repaired by other technicians but not successful, my final solution is to replace whole board then its Works after that.
This tutoroal is for beginner and for education purposes only. There are many ways to repair ROM via replace by parts or ROM chips only.
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