For Unlocked Bootloaders: Flash one of the Recomnend Kernels; Adv. Stock Kernel or KTG Anzu Place ROM on SD-Card Back up user apps and data. (Various apps available, search Google Play. This is a popular one. Power off phone. Boot to CWM (Keep pressing the Volume Down key after the Sony logo appears) Wipe Data/Factory Reset Mounts and Storage --> Format /System Wipe Cache Partition Advanced > Wipe Dalvik Cache Advanced > Wipe Battery Stats Install zip from SD card > Choose Xperia Ultimate HD Follow on screen instructions on AROMA. After Complete Installation Press "Done" and Reboot. Give the phone a good full charge, and enjoy your brand new phone!