Yes, Flash will run on the browser. We currently ship with Chromium as part of the OS, and for users who run the downloaded version of the OS we automatically download Google Chrome since it includes video codecs that we cannot ship for free. Both browsers will attempt to download and use Flash from the Google server. We will make Firefox available for download next week in our app center, and it will also download Flash. Note that in all cases, you might have to restart the browser after a few minutes in order for the downloaded Flash to become available within the browser.
If you need Java in the browser (this technology is rapidly dying but may still be needed for some older websites), you will have to use Firefox, as Chrome no longer supports Java.
One word of caution on using the Endless USB stick… Installing Chrome might not work so well in live mode as everything downloaded has be stay in memory (since the live USB is not a writable drive). So definitely try the live USB first, but if you want to try Chrome or Firefox, I’d recommend installing from the live USB onto the computer’s internal drive.
I hope things work well for you.
Roddy