An updated firmware version for the Samsung Galaxy S II on AT&T has surfaced online. Tagged as build I777UCKJ1, the software is based around Android 2.3.5 and Samsung’s TouchWiz UI. It addresses some of the initial bugs popping up on the phone, which has only been available since mid-September. Fixes include a reduction in Home button lag and a corrected lockscreen bug, and users can expect a newly implemented overscroll glow. The download comes courtesy of designgears over at RootzWiki, where you can find the latest build up for download.