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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 bootloop after false recovery

Hi,


After an almost perfect case replacement, i had an problems:

no network, home button, etc, battery 1%

After an night the battery died.


The lightning dock flex doesn’t fit, and after the second teardown, it goes to boot loop:

apple logo, black screen, off, apple logo, black screen, off, etc.

After the second recovery try, it booted to the welcome screen, an after the chosen language it frozen and shutdown, and goes to this infinite bootloop.

I’ve tried 10-15 the recovery, restore, changed the battery to a new one, lightning dock flex replacement, disconnect all the component (camera, buttons, lightning port flex, screen, touch, home button, etc.


It' sound logic board failure?

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I would start by testing a bare-bones setup. Start by disconnecting the battery first (always!). Then disconnect the digitizer, LCD, front camera, rear camera and home button extension flex (see this guide). Now re-connect the battery; you should only have the battery and Lightning Dock flex connected. Connect a known-good, preferably Apple-original Lightning cable to an iTunes enabled computer.

Does iTunes recognize your phone? If so, then you should re-connect one flex at a time until the phone stops working. I would start with the Home button flex first, then add the rear camera, LCD & Digitizer then from camera flex.

If the bare-bones setup does not get recognized by iTunes, then you most likely have a logic board issue. You could send it (or find a local) to a repair shop that specializes in micro-soldering repair. Sometimes the fix can be straightforward and relatively economical.

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1 Comment:

No, actually with battery and lightning flex no sign of the phone in iTunes sadly

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Ngy Bertalan will be eternally grateful.
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