A few months back, Adobe told everybody that Flash will not be supported on Android 4.1. As any of you who have used Jelly Bean will have noticed, this turned out to be true and was the reason many demos at Google’s keynote this year were in HTML5. While some people may think that this isn’t a big deal because Flash continues to be supported in Chrome and yet others may no longer have any use for the fast dying technology (at least on mobile devices, thanks to Steve Jobs banning it from iPhones and iPads and Adobe itself discontinuing support Android 4.1 onwards), others still use Flash.
For such people who still wish to use Flash on their Jelly Bean running devices, there is hope. An XDA contributor stempox has discovered that side loading the APK will allow users to view things through the native Android browser app, as always. All that needs to be done after is to enable plug-ins which you can do so by moving to the browser settings. If you are using Google Chrome, this will be an issue however as Chrome doesn’t allow plug-ins. For devices that have Browser as the default browser (Galaxy Nexus and perhaps the Nexus S too), this will work okay. Others (users who are using the Google Nexus 7 for instance) who have devices that do not have Browser pre-installed will be required to manually install it.
Follow the link to the guide given at the bottom to manually install Browser on your device, if you need to.
As for Flash content, it will work absolutely perfectly when Browser is installed. To install Browser, you will simply have to copy over Browser.apk to /system/app using a file manager that is root enabled. Modify its permissions appropriately. A few more steps that are easy to follow come after this.
To get Adobe Flash working on the Nexus 7 as well as other Jelly Bean devices, check out the following threads and get started.