Sony Xperia XA Ultra Dual F3212 Update to Android Marshmallow 6.0 Stock Rom 36.0.B.2.109 Global Generic. First, You Must Need to Follow Methods to Flash XA F3212 Stock Firmware & You will get Original Xperia XA Ultra File From Below Content in this Post.
How to Update Sony Xperia XA Ultra Dual F3212 to Marshmallow 6.0 Stock Rom Global Generic
Step:1 Take a Look, check your XA F3212 firmware version If Device has Newest One Just Skip this Thread
Step:2 Get updated Sony Flashtool version from HERE
Step:3 Paste the FTF Firmware file to folder “Which Name Firmware” included in the XPERIA Flashtool
Step:4 Open the Flashtool, click on Install and Select downloaded firmware, then click ok. Important – if you do not wish to delete any data of your phone, just uncheck flashing userdata.sin file. All device important data will remain on your phone, but sometimes it may cause additional troubles. So it’s better to you (and I Suggested that) to do the backup of the Phone data than proceed with clean installation and then restore your Device data.
Step:5 Turn off your Xperia XA and when Flash tool Display pop up window, connect phone to Computer with Keep Holding volume down button
Step:6 After Some Minutes All procedure is Done & Enjoy Updated Firmware in Your Device
File Size: 2.03 GB