I have version 2.3.3 of the stock android browser on my phone. I know there are newer versions out that support features that I want which are not available in 2.3.3. However, I do not see any upgrades available, and in fact the stock browser does not even show up in the Google Play store.

I figure I probably need to manually install from somewhere, but where do I find the necessary files and how do I perform the upgrade? Note: I am not interested in upgrading to a newer version of Android.