Hello, I would appreciate some clarification, before I upgrade my X. Just downloaded the SF zip file and getting ready to update my F5121, which was previously bootloader unlocked (code from Sony). Currently, the phone is running Android 6.0.1 (marshmallow). My questions are: 1. Do I need to upgrade to Android 34.3.A.0.228 first, as per SF upgrade guide, or I can just flash SF image, using fastboot command (under Win 7) over the AOS 6.0.1? 2. If Android needs to be upgraded to 34.3.X.Y.Z first, can I use an Androxyde tool, instead of EMMA tool, as I already used the first one to flash MM 6.0.1? 3. Is it a good idea to create a recovery partition (TWRP) on the phone, prior to flashing anything? Will it persist over 34.3.X.Y.Z/SFOS flashing? Many thanks for your help.