Yesterday after rooting my 1+1 and installing TWRP and OMNIrom my Phone went in a bootloop.
Sideload and all aother functions didn't work.
Finally i managed to bring it back via a toolkit V2 from @inthiaano ONEPLUS ONE toolbox (64GB)
In the toolboc there is a button "flash CM11S" and after 10 min my Phone was working again.
Getting into fastboot is arequirement to flash the rom via toolbox.