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I have a note 4 official firmware, that won't boot up anymore. It goes into mmc_read failed. On the center it says Downloading... do not turn off target!! but nothing happens.

I tried booting into safe mode, and this happens. If I don't boot on safe mode, it get stuck on the main screen with the logo.

Is there a way I can still back up some of my data from the phone. Because I want to probably get it replaced.

Thanks

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take the battery out, hold the power button on for 1 min to drain all residual power. Replace battery and power up normally. This has worked with mine but am not game to power it off anymore.

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