Idevicerstore tool to restore iphone ipad without itunes
This is a great tool and could be one future solution for remove icloud from your idevice using this strong platform linux.
If you want try linux potencial in idevices world here is one software you should try restore your iphone ipad, ipod without itunes using idevicerstore, this  idevicerstore is a tools for restore, recover a iphone firmware without itunes this tool workes with lines commandes in terminal download idevicesrestore for linux  click here
you can try decrypt firmware 8.1 to get full root & delete to bypass icloud this is a new method to bypass icloud  the bypass from the firmware not from the devices enter root the firmware and delete after that restore using linux the firmware modified  your devices  activated without icloud screen .