If I can recall correctly, we do not allow rooting. Unfortunately, if you do root, support to you will be limited, warranty is voided and that you are doing it at your own risk. Unfortunately, this is what I think is the policy but I will contact somebody to clarify for you. Thank you!

for an open phone you can opt for the models offered by geeksphone which are branded as developer devices and should be easy to play around with: http://shop.geeksphone.com/en/