How Do I Unblock Pictures on Facebook?
Facebook users can choose who can view their photos by changing the security settings on each photo album. The user controls the settings to allow only Facebook friends to view the photos, or to customize an album's settings to block certain people from viewing the photos. With a few clicks, the user can change the settings to unblock certain people and allow those people to view the photos. Only the person who posted the photos can unblock the photos.
Log in to your Facebook account.
Click on your name in the upper-left corner of your home page to view your profile. Click on "Photos" under your picture to view your photos and then select the photo album that you want to unblock.
Click "Edit Album" and then click on the drop-down menu to the right of "Privacy."
Click "Customize" to unblock certain people. Click on the "X" to the right of the named people who are blocked from viewing the album. After a person is removed from the blocked list, the photo is unblocked and that person can view the photo.