Hi guys Long story short : I wanted to try CM 12.1 on my new Mi4 LTE and managed to flash it yesterday. Everything worked perfectly (USB connection to computer, TWRP, etc) but I then decided to go back to MIUI (yes, it's better). So I downloaded the latest weekly, rebooted in MIUI Recovery, install update.zip... Update failed and now phone is stuck in Recovery mode (looping). It does not enter any OS now. I read all the forums, installed MiFlash AND MiPhone Suite, nothing works. Because now my main issue is that the phone cannot install properly via usb : driver cannot be properly installed. I thought it was because I installed many ADB / MiFlash / MiPC suite drivers so I uninstalled all of them (via USBDeview) and plugged-in the phone again - nothing works. In device manager, even chosing the right .inf driver directly from the ADB folder doesn't work. Any idea how to sort this out? I just need the phone recognized via USB to flash a new rom with MI PC Suite... simple as that. Thanks a lot for your help !