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While apple logo flash on / off / on / off .... endless cycle

System crashed and restarted. But restarting entered endless loop: while apple logo appear / disappear / appear / disappear / ......

What happened to it? How to recover?


I tried iTunes to update (no erasing of content), but it got 4013 error, and said it couldn't be updated.

iPhone 12 Pro Max

Posted on May 12, 2021 5:49 AM

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Posted on May 12, 2021 5:58 AM

Click on the Get Support link at the top right of this page to start the service process.

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While apple logo flash on / off / on / off .... endless cycle

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