Download Icloud Files from here https://icloudbypassguide.wordpress.com/ these are needed to perform the 4th step
1- Restore your Locked iPhone .(necessary)
2- Get the device in DFU mode .
3- Download the files to bypass from here and watch the Above Video and follow the same step
http://icloudbypassguide.weebly.com/
4- now drop data_ark.plis from downloaded folder into mnt2/root/library/lockdown/ ( same folder where you got the file and REPLACE)
and now use tinyumbrella to get out of the recovery Mode and now icloud lock scree will not appear :)
this is the Only Working icloud bypass till date no other trick is bypassing icloud except this this is tested on iphone 4 above in the video and also many times and it works perfection
