The first boot up after an update can take anywhere from 5 to 10 minutes. Do not interrupt the process. Troubleshooting Common Issues
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A: This is a common issue known as a "bootloop." Your best course of action is to boot back into Recovery Mode (Power + Volume Down) and perform a "Wipe data and cache" or "Factory reset" from the menu. If this doesn't work, you may need to re-flash the firmware file. The first boot up after an update can