Quote:
Originally Posted by tiger4android
hi, i accidentally upgrade my tmobile galaxy s2 2.3.6 to 4.0.4 do you have any software to downgrade from 4.0.4 to 2.3.6? thank you
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Hi Tiger.

Welcome to the forum.
Yes, if you follow the guide in the OP, you can download and install Gingerbread 2.3.6 if you have the T-Mobile Galaxy S II SGH-T989 phone.