Where to get Flash Player for Android 2.2 Froyo
You can obtain the apks for Flash for all versions of Android directly from Adobe in their old version archives.

http://helpx.adobe.com/flash-player/kb/archived-flash-player-versions.html

Scroll down a bit and you'll find "Flash Player for Android 4.0 archives" and "Flash Player for Android 2.x and 3.x archives".  These include the last versions of each released before Abode dropped Flash for Android.