Keyboard KB900

Recently bought the KB900 backlight soft keys keyboard to replace the Logitec K800 which is no longer available. The KB900 is a wonderful keyboard and love the apperance with the intelligent backlight system and key functions. Just one issue with the F7 button doubling up as "snip" for a screenshot which works very well in conjunction with the Windows Paint App, however it does not scroll down to capture a longer screenshot, only what is on the screen. Firefox brower enables this scroll down screenshot function but now has a limited amount of pixels during a browsing session, so once this pixel amount is reached no more screenshots which is a pity. Is Dell able to do a software update patch to enable a scroll down screenshot using the "snip" function?