can we downgrade from one ui 2.1 to one ui 2.0 using odin tool

[Rahul1250]

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.

[yashchaplot]

service center can downgrade the software ,kindly visit service center and tell them to downgrade to one ui 1 or 2 they definitely do it..
me also 2 times downgrade my device..

[yashchaplot]

mark as solution plz if u satisfied..

[Rahul1250]

But yesterday I went to sevice center they refused to downgrade the software. Now what should I do ? .

[MembersAnju]

but why you want to go back

[ATANUROY]

its always welcome not to down grade as initially after using such toll it might run well that too under probability but on a long stretch it will creat bugs ...so if possible plz keep on...plz mark as sol if I am helpful to u

[veer]

yes you can

[Š]

No. A51'S bootloader upgraded from 2 to 3 with OneUI2.1 update. We can't downgrade to lower level bootloader.

[Rahul1250]

with odin tool we can downgrade

[Š]

Not to lower bootloader.