There’s no shortage of brightness adjusting tweaks available on Cydia. You’ve got tweaks like Light Bright, SBBrightness, LockGestures, and many others that are all capable of adjusting your iPhone’s brightness.
The latest addition to the fray is Brightness Icons — a tweak that places brightness adjusting app icons directly on your iPhone’s SpringBoard…
[tube]http://www.youtube.com/watch?v=RCfn8tDqa9U[/tube]
As you may expect, tapping on the “up” icon turns up the brightness, while tapping on the “down” icon, turns down the brightness.
Tapping and holding on the icon will adjust full or minimal brightness to its max setting. Because of this, in order to move the brightness icons, you’ll need to use another app icon to put the device into wiggle mode prior to moving the icons.
The only caveat I found with Brightness Icons is the fact that WinterBoard is a prerequisite. If you try to stay away from WinterBoard like the plague, then you may want to consider one of the aforementioned alternatives.
Brightness Icons is a free jailbreak tweak for jailbroken iPhones. Would you be willing to give it a shot?