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Repair information and guides for the iPhone 6S released by Apple on September 25, 2015. Models: A1688, A1633

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iPhone missing recovery mode, just Apple logo than backlight

Hello, I have a ln unusual problem with iPhone 6s.

It stuck on using and turned off. After trying to turn it on, apple logo appears and then just black screen with backlight on.

When I’m trying to go into recovery mode, it shows just black screen with backlight on.

I tried going into DFU and it success. iTunes sees it and starting to restore, on iPhone appears Apple logo with progress bar, but it won’t start filling and iTunes gets an error 6.

Tried with 2 laptops and 1 pc and 3 usb cables but get the same error.

Tried with 3utools and it starts recovering in DFU, but than it shows an error like “A problem when going from DFU into Recovery mode”.

So I’m guessing that it lost Recovery mode somehow or there is a problem with some components on the motherboard.

Anyone had similar problem?

EDIT: The new information that may be useful is that I tried with another fully charged battery from another working phone and got the same error when restoring, but when I put back that second battery in the working phone, it shows like it’s empty at first, then put it to the charger and the working phone turned on and showed full battery like it was.

Answered! View the answer I have this problem too

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There isn't much information with iTunes restore error 6 so I can't tell what would be causing that restore error.

That falls into the category of the NAND chip maybe being at fault, if it is at fault it would need to be removed, reprogrammed using a NaviPlus Pro 300 then placed back on to the logic board. Only people that do micro-soldering and have the NAND programmer can do that.

Usually I would go through these troubleshooting steps:

1. Try another cable and USB port on the computer

2. Use another program instead like 3UTools

3. Try another computer

For a repair shop they may try:

- Another charging port, then another battery, restore with only display cables plugged in, try with replacing U2 Tristar charging IC.

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2 Comments:

Thanks a lot for a detailed answer. I’m definitely gonna check everything about that.

The new information that may be useful is that I tried with another fully charged battery from another working phone and got the same error when restoring, but when I put back that second battery in the working phone, it shows like it’s empty at first, then put it to the charger and the working phone turned on and showed full battery like it was.

I doubt that charging IC is bad because it made the working battery goes crazy on the working phone. What do you think about it?

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If you have another same iPhone you could try putting the logic board in another housing that already has the parts in it and if the issue is still the same you know it's an issue that can only be fixed with microsoldering.

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