After I've upgrade to iOS 4.2.1 and I have problem to view most of the flash website. Please advise asap on this matter even after I've jailbroken by Greenp0ison.
iDevices don't do flash so every flash site will give you an error about installing the latest version of Flash. What is the difference now compared to before you JB? You can get Skyfire that will allow you to view Flash movies on sites but that is the only Flash content you will see only the movies.