Chosen Solution

Hello, Just got an iPhone 7 which was dead, was in DFU actually when i go to restore it, It stays at 19% on 3utools. It enters recovery mode and when i check on 3u tools it says the Serial Number is N/A. Any idea what is the issue here? Facing this first time

Check if you can read the NAND. If you can get it into DFU you could use the iBox but it is a more certain conformation if you remove it and use a programmer.