error 4013 and nand error

Hi everybody, i'm working on an iphone 5 that i got with cracked screen, ( it has been cracked under a truck :) )

the porblem is that the phone was working 100% and when i replaced the screen it appear the nand error, surfing on the internet i discovered that was the camera flex so i replaced it with a new one, nothing happened, i putted it in DFU mode and now i have the itunes icon, trying to restore it gave me back the error 4013, i had another original iphone 5 so i replaced the entire screen assembly, still nothing, then i putted the motherboard into another iphone 5 still the same error,

so i'm start thinking that is the motherboard.... ;(

i've also tryed to restore without the camera flex connected and without the screen competelly still the same error

did some one experienced with this error?

is there any component on the motherboard that i will need to replace?

i really appreciate if you can help me with this issue.

thx

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HI i just discovered that the error was due to the compass IC fault, i just removed it, do you know if this will affect also navigation with map app? or i can get position with the LTE/3G network?

thank you

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Sounds like it's been through a lot. Also sometimes when fixing a phone that worked perfectly broken, breaks more after repair. Here, try some of these

Install the latest version of iTunes.

Restart your computer.

Check for updates to your Mac or PC. If you restart your computer for an update, check for updates again after you restart.

Try to restore your device using another USB cable.

Try to restore your device on another computer.

Force your device to restart.

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Hi i've tried all the steps but still got the error i saw that some one has solved the issue removing the compass IC or the u2 IC what doest it affect removing them?

thank you

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Well, I think you got to change your NAND GATE chip on the logic board. 4013 Error occurs when there is a communication flaw with CPU.

Remove the NAND GATE chip safely.

Check the NAND chip. If it's fallacious, Replace with a new NAND Chip.

Solder the NAND chip and with the logic board again.

Then connect your iPhone to the PC, and restore iTunes.

Hope it helps. :)

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