1. I have questions about manually rooting the Nexus 7. Is this guide complete or is it missing any steps (such as unlocking the bootloader) since I've never rooted before. How to MANUALLY re-root after an OTA update 2. My Nexus 7 is the wifi version with Android 4.1.2 installed. Will all the downloads work with this version and are they all up to date? 3. I'm confused about step 3. Do I download the SU files on my tablet or in Windows? 4. This next question depends on the answer to the first question. Will this process perform a factory reset and will I lose my data? 5. Do you have more good links to simple manual rooting instructions and "what happens when things go wrong" guides?