I want to know about ice cream sandwich in my galaxy s2?

I have upgrade my galaxy s2 with ice cream sandwich for last 4 to 5 months but after that many applications do not work in my phone like youtube downloder ,call recorder and many more but youtube downloder is important than other ones so what is the solution ? And now is it possible to upgrade jelly bean to my... show more I have upgrade my galaxy s2 with ice cream sandwich for last 4 to 5 months but after that many applications do not work in my phone like youtube downloder ,call recorder and many more but youtube downloder is important than other ones so what is the solution ? And now is it possible to upgrade jelly bean to my galaxy s2 so plz guys help me as soon as possiable.
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