Please tell us some basic information before asking for help:
Model Name: 6z
Firmware Version: 2106.156
Rooted or not:
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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i knew it i shouldnt upgraded !
Cracky sound on the bottom speakers
Netflix wont open up
how to downgrade back to 10 ?