Contact's photos are gone after getting official cyan, 8.1 update...?

You probably just need to sign in to facebook again, also make sure that under the people setting fb is listed.
 
Is the Facebook app's option "Connect with my phone" currently enabled? I had this problem when I first installed 8.1 preview, and even though it pulled down the 8.1 Facebook app, I had to uninstall then reinstall it before it would let me enable the "Connect with my phone" option, at which point it synced, and my contacts' pictures showed up again.

(this assumes you're working from a system where you're merging your Facebook contacts with your phone contacts, and all of the pictures are pulled from the Facebook profile image)
 
i didnt even connect my contacts to fb, before after i save a contact i put a photo manually, after the update, its gone...
 
The only way the locally stored contact pictures would come back after a reset would be if they were synced with your Microsoft account. Check your outlook account from a computer and see if your contacts have pictures. Are you importing your contacts from the SIM? If you are, then you will not have a picture. You have to get your contacts from your ms account which backs up the photos.