It is empty.
It is v3.4.2B-1206
Then try to connect your phone to pc as you are now in twrp , if you don't see anything you have to do a format data ..
If you found "sdcard" folder and it's empty then you have to do a format data ..
Nothing else works if data is encrypted ..
Choose , Wipe / Format data / type yes and hit enter ..
Go back to main menu and now choose , Reboot / Recovery ( phone will turn of and will enter twrp again ) ..
Now as you enter again to twrp you can connect your phone to pc and copy EU rom zip at your storage ..
Choose , Install and find the rom zip you copied , choose it and swipe to confirm flash ..
Then choose option / wipe cache and dalvik and swipe to wipe / Reboot system / Done , wait to boot ..