Einleitung
Sometimes you need to clear the cache, for example when an OTA update hangs instead of rebooting.
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Shut down your phone by holding Power and tapping Power Off
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Hold down Volume Up then Power until you see Recovery <<==
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If the arrow does not point at Recovery press Volume Up until it does
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Press Volume Down and wait a few seconds
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When you see No command, hold Power and Volume Up until you see the menu shown
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Choose Wipe cache partition using Volume Up/Down then Power
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Choose Reboot system now using Volume Up/Down then Power
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