Hard Reset. Hardware. HUA BOX. HUA Gold All In One. HUA Gold GENT. HUA Gold HMT. HUA HFT. C6802 - Sony Xperia Z Ultra C6802_14.5.A.0.270_R1D_CustomizedUS.ftf.7z
In the left corner of the unlock interface, there should be "Forgotten the password". Click it. Now input your Google Account password and the SONY Xperia Z Ultra C6833 should be unlocked. You can also Hard Reset SONY Xperia Z Ultra C6833 using Android Recovery Mode. Alternatively use Google Find My Device app to unlock SONY Xperia Z Ultra
Click on “Reset options” from this section it will allow us to restore network options, applications or reset the Sony Xperia XA Ultra completely. 5- Fifth step: Click on the last option called “Erase all data (factory reset)” or simply “Factory data reset”.Fix Bootloop in SONY Xperia Z Ultra C6802 Here you can find a solution to the bricked phone problem. If your phone is unresponsive , unable to power on, or stuck on boot-loop, you might want to try following the steps below to fix this problem by yourself .Sony gives sneak-peaks/preview builds of latest OS which requires unlocked bootloaders, as they did with Xperia 2011/2012 line, so who knows may be Sony may give early builds of next android OS Most of this is taken from lollylost100 's his tutorial from ARC thread (all credits for that concise tutorial go to him, i have elaborated on a few Kd7oFVN.