View source for How To Fix iPhone 8 Stuck In DFU Mode. Error 4014

{{Repair Guide
|Device=IPhone 8, IPhone 8 Plus
|Affects parts=Main Logic Board
|Needs equipment=Soldering Iron, Hot Air Station, Microscope
|Type=BGA, Soldering
|Difficulty=3. Hard
}}
{{stub}}

==Problem description==
How To Fix iPhone 8 Stuck In DFU Mode. When you try to update or restore, you will get iTunes Error Code 4014. The screen will stay dark or not lit up.
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==Symptoms==

* You get no image from the screen
* You plug into computer and iTunes/3U tools detects it in DFU mode
* If you try to Update or Restore, you get these results:
** iTunes Error Code: Error 4014
** 3u Tools Easy Flash: Fails at 19%

==Solution==

=== Cause: ===

* Error 4014 is usually "NAND not detected".

=== Solutions: ===

* Check the caps around NAND to see if they're shorted.
** If there's a short, remove the shorted cap and try to boot the phone up.
* If no short, pull the NAND and connect it to the JC P13 NAND programmer and see if it's readable
** You can refer to this video for how to use the P11F Programmer: <nowiki>https://youtu.be/J6n2Bj7sG5A</nowiki>
** If it doesn't read, the NAND is dead and needs to be replaced
** If it does read a NAND, then you can reball NAND and install it again. The phone should boot right up.