I believe it was @sdbags suggestion to wipe /cache first, then continue with /data and /system. TWRP for 701 is extremely particular about filesystem corruption, especially on /data. It was only after the second full format of /data that TWRP started actually behaving on my 701. But it hasn't missed a beat since. And you can't do a full format on CWM!Hi Sonia, thanks for quick reply. I´v tried to do what you´v suggested before and now but I think the problem is with TWRP. I have probles with mounting of /cache /system /data partitions. Sometimes It works sometimes not and even when everything seemed to work fine and no error message is shown during wipe. After installation a reboot again massive FCs. I have also searched on TWRPs forums and there are some problems with mounting of partitions described but no real solution.
I will try to flash another recovery (CWM) and see whether these problems will persist.