Just Received an Iphone 5s with the same issue "Blue Screen while Restoring" and "Error 14"....
After inspecting the phone i noticed that the customer had tried changing the panel ..... And as suspected "Wrong screws tighten in wrong places"
I removed the nut out and carefully scraped the first layer with a sharp tweezer........ And i could see 5 out of seven tracks are damaged.....
Now im worried how can i connect those tracks.... As manupaliting them a lot would render the phone usless... and if the tracks are damaged any further i wont get another chance ....
I dont have a microscope
any suggestion on how to start with this job......
Or if @glasscom has any pics of the phones he has successfully connected the damaged tracks.......
just for reference......
Thanks....