Sony Mobile halted the Nougat update for Xperia XA Ultra because they found some some glitches in the firmware. Now it seems the issues have been fixed and Sony has started the regular roll out of Android 7.0 Nougat for Xperia XA Ulta again. The update has been released for the Xperia XA Ultra via OTA, this time the update arrives as build number 36.1.A.0.182, previously the update was released with build 36.1.A.0.179. If you are the one who hadn’t received the update yet, then give a try to capture the OTA manually, go to Settings > About phone > System updates.
If this process didn’t helped you then you can grab the 36.1.A.0.182 firmware ftf file from the link below and install it manually using Sony flashtool. The whole process is mentioned below just follow the steps in sequence to flash the Nougat based 36.1.A.0.182 firmware on Xperia XA Ultra via Sony Flashtool.
How to install 36.1.A.0.182 ftf update on Xperia XA Ultra
Before you begin:
Download latest USB drivers for Sony. Click here
Enable USB debugging. Settings > Developers options > USB Debugging
Process to install the Nougat based 36.1.A.0.182 firmware on Xperia XA Ultra via Sony Flashtool
Now follow this guide to install stock Nougat 36.1.A.0.182 firmware ftf via Sony flashtool.
Download 36.1.A.0.182 ftf for Xperia XA Ultra. Download
That’s it! Give us your feedback or feel free to contact us for any queries.
Source: Xperia Blog