Read this first :
Do not Factory Reset your Rooted Phone Don't worry about the title, AndyOpie150 has a great guide in here for flashing roms and recoveries!
Don't rush into this, you could end up with an expensive paperweight, please read and follow directions carefully!
Read this :
~**~ PLEASE READ ME FIRST! Android Things to Know! ~**~ it will answer 90% of your questions.
HTH
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Failing to prepare ,is like preparing to fail.
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