Also, the version 4.4.2 is KitKat, which is an older OS. Compatibility might be an issue with newer rooting tools. I need to check which files are needed: maybe a specific root file for this model and OS version. I've heard of SuperSU but not sure if it's compatible here. Alternatively, using Root Genius or other rooting tools could be options. samsung n7100 root file 4.4.2 download