Be brave and with self confidence that you can do it. Just watch the You Tube of Eko Sunaryo "Flash Firmware ASUS Fonepad 7 FE170CG (K012)" and read the steps of Mr. Alden Roi and watch it many times until you memorize. Jot down some important points. The steps I made is for beginners and just follow the procedures step by step and you will succeed. Print my procedures and tick one by one the steps you finished. By the way I made corrections. Correction: I 3. Extract the UL_...user.zip. After extracting, rename the file UL_...user.zip to K012_sdupdate.zip . IV4. Copy the file K012_sdupdate.zip to MicroSD of your Fonepad & not to Internal Memory (Very Important!). Try it and hit Thanks Button if I helped you. Don't worry I am here for any questions or problems you will encounter.
The most important thing is follow my steps carefully. Sorry I cannot upload on YouTube because I don't have camera. If I was able to do it so can you. I write these procedures to help others to root their phone. After rooting successfully, then you can upgrade and use the Rootzenfone technique. Delete all the ASUS Live Demo.apk using Root Explorer from Play Store. I tell you 100% that it will not Brick your tab. Only Fear controls you. Once you are able to do it, then you will say it is very easy. Actually the procedure seems to be long because I made it step by step but actually is not.
I hope you will try it and congratulations in advance.