Hello there, A friend recently purchase a Redmi 2 Enhanced 16GB version I believe it is the china mobile version with FDD-LTE B3/B7. Questions: The rom it shipped with I believe is miui version 5.5.22. Will the Rom from this site labelled HM2014813_5.5.29_v6-4.4.zip work with this model? Can I just download this rom to the phone and update it through the updater app on the phone? Secondly, this phone seems to be rooted. My friends wants to use banking apps, so is there some way to unroot this phone? Any help appreciated, thanks.