android version downgrade

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http://androidforums.com – hiiii friends i have updated my samsung galaxy y gt-s5360 from 2.3.5 to android 2.3.6 but i like the previous version 2.3.5 so how can i get it back on my samsung galaxy y i miss that version plz help me i want that version without voiding warranty and without any problems plz help me friends (General)