Yesterday i tryed to copy 1 file trough MTP and windows explorer crashed , later found out mi2 virtual sdcard had become empty after using MTP but all other partitions data like apps setting remain. I belive it could be allocation table failure? Today tryed many tools for 3-4 hours and found no way to use usb mass storage with latest rom. If i flash older rom that suported mass storage what version i need? Or can i use mass storage with android OS off and usb connected, as i remember it was possible? I need it to recover trough pc as i dont want to lose data by overwriting and diskdigger for android only seeks photo/video. How to mount usb storage to recover or is there other way to restore file allocation table like on pc using commander? MTP seems very unreliable overall , even with mp3 players both on win 7 and 8, specialy when folders contain many files.