Dear ALL, It maybe kind of you to help me bec. I bricked my mi3 after updating to 4.2.21 version. When I open EVERYTHING just forced closes and it stucks to boot image! I cant copy ROM via sdcard it would not allow. I've tried to delete everything via recovery but unsuccessful. Any more options for me? how to use the fastboot to put update rom version in the sd card? I am using a Macbook any help?