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Released September 16, 2016. Model 1660, 1778 Available as GSM or CDMA / 32, 128 or 256 GB / Rose gold, gold, silver, black, and jet black.

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iPhone 7 not detected in recovery/dfu mode?

Hello, I recently bought a 25$ iPhone 7 to restore with a good 128gb motherboard, however I decided that I wanted to do a logic board swap with another iPhone 7 mobo I had bought because it had the original home button with it. After installing the new logic board, I was surprised to see it stuck on the Apple logo and boot-looping, as well as not being detected in recovery mode. So I took that board out and put the old one in just in case I was losing it, and after re-installing it, the old board, too, started doing the same exact thing: Boot looping, and stuck on the apple logo, unable to restore because recovery and DFU modes don’t work since none of my 3 computers can detect the phone when it entered that mode. I have tried a new dock, new cables, multiple computers to no avail. All the screws are in the board in their correct holes so I know i’m not missing any grounding, and I have tried unplugging everything except the bare essentials to see if it was a failing component, but no. I actually tried to re-install the new board as well, and it started working for a while before I unplugged the cable, and plugged it back in, then the phone shut off and started bootlooping. Can anyone help me figure out what on earth is going on here? I feel like I’m losing my mind! Thanks for helping, Ben

Edit: I have replaced the battery with a quality known-working high-capacity aftermarket battery, and have tested the board with the original working Apple battery.

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You haven’t mentioned a battery replacement. A faulty battery can cause these symptoms.


@imicrosoldering Oh sorry, I actually replaced the battery with a quality aftermarket battery that I know works, and swapping it out with the original battery made no difference.


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1 Answer

Try to disconnect all the flex cable’s except the dockconnector and battery from the logic bord and connect the iphone to itunes for a recovery or update and when th ephone boots up you can connect the flex cable’s one by one so you know which is causing the loop.

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I ended up ordering a new dock connector for the phone, I'll let you know if your suggestion worked when I get the connector in! Thanks for the advice!


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