Can't update to Lollipop

Hi i am htc one m7 user, and i have a problem with the update to lollipop since this winter.I get the nottification about it, i download it, i click the install button, it goes in the installation screen and then, when the bar reaches 1/4 it gives me a red triangle with "!" image. I opened the console and it says : ( I tried putting an image, but this is a new account so i cannot apparently)


Finding update package...
Opening update package...
Verifying update package...
Installing update...
L50QCT.01.102.008
Cleaning cache preload folder...
Verifying current system...
"/system/priv-app/GoogleLoginService.apk" has unexpected contents.
Installation aborted.
Write host_mode:0 done


I asked for assistance from Htc Support, and they told me from the first reply to send it to an authorized service.But i can not do that as i need my phone every minute, for work. That i why i posted this here.I hope someone can help me.Oh and yes, the phone is not rooted, never was.