The most recent Android 5.1.1 update (23.4.A.0.546) to Xperia Z2 UK D6503 variant is now available for download as a recovery flashable ROM with root access.
The ROM is completely stock except for the part where files have been modified to gain root access. Also, the ROM pre-includes Nut’s Locked Dual Recovery so you don’t have to reinstall recovery after flashing this ROM. All thanks to nokian70 for putting together a useful ROM like this.
Installation of the ROM is pretty as simple as it should be. Just grab the ROM file from the download link below and flash it via a custom recovery with a factory reset / data wipe.
[icon name=”list-ol” class=”” unprefixed_class=””] How to Install a Custom ROM via TWRP recovery