Chosen Solution
After battery replacement on my iPhone 5s, it resulted in boot loop and when trying to restore/recover by iTunes, I get the error message “Error 9”. I’ve tried change USB cables, and even tried the 3d part software “3u Tools” but nothing works. Any ideas? Thanks in advice for help!
There are several things that can cause Error 9 on the iPhone 5S. One that may be of interest here, due to this following a repair attempt, is when the logic board is damaged via ‘“Long Screw Damage”. LSD occurs when you inadvertently put a long screw where a short screw should go in one of the holes for the LCD bracket. Take a look at Step 17 of this guide to see if the screws you put in place match those from the guide. If this is the case, the phone can be repaired via a micro-soldering repair but this is not a trivial repair and the cost may outweigh the value of the device.
Did you enter DFU mode? If not, try that. Hold the home + power button simultaneously for 10 seconds to enter DFU mode. That can help.
