Can we downgrade samsung software from one ui 2.1 to one ui 2.0 using odin tool without any errors because first time i am using this tool to downgrade. Please tell the complete procedure to downgrade the software and also tell me that bootloader unlock is required to downgrade. I am very worried that my device will brick afterthis. I went to sevice center as well they reinstall the software but problem remains the same in this one ui 2.1 like heating, battery drain and lags.so many updates already came but problem remains the same. please guide me is this safe to do.
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