[Q] Vanilla Z2 stuck at purple boot screen topic

I am in need of expert help.
Last night I rebooted my Z2 and it starts normal up until the purple screen with the wave pattern and then it just stays on that screen and wont boot further.
I have not unlocked or flashed any new firmware it's the stock Android 4.4.4 pushed by Sony. I tried an hard reset but still the same, I even let the phone run this screen until the battery was empty but still every boot it sticks at the same screen.
Only way to shut the phone down once this screen appears is power button and volume up. Any ideas how to get it to boot again? Phone is only 3-4 month old to. Maybe get hold of the original firmware from Sony?
Any help greatly appreciated.

[Q] Searching for Vanilla Rom with touchwohiz elements topic

Hi everyone!
I am currently considering buying a Note 4, watched and read reviews and I really like the big quad HD amoled screen, the camera, and the spen. But what I don't like is the software. The note version of ThouchWhiz sure has a few cool functions like multi window but I hate the design of the settings menu and status bar. And, of course Samsungs update speed is not the best. I currently own a Nexus 4 and I'd like to have a similar experience (Vanilla Android) on the Note 4, but with spen and fingerprint functionality similar to TouchWhiz. So here's my question: Is there a custom rom with similar functions or would I have to stick with TouchWhiz?
Thanks in advance