For iOS 7 jailbreakers: you can now customize the wallpapers used with the "floating bubble" Dynamic Wallpapers. Here's how:
? Using iFile copy your image from var/mobile/Media/DCIM/100APPLE (or 101APPLE)
? Paste it in System/Library/ProceduralWallpaper/ProceduralWallpapers.bundle
? Change Blue_1k_v2.png to Blue_1k_v2.png.bak (rendering the old image useless but not deleted)
?Rename your image to Blue_1k_v2.png
?Respring
Make sure you are using the first dynamic background (Light Blue) in settings because that's the image you replaced
Source: Got the dynamic background onto my wallpaper and changed the slide to unlock text. Howto inside. : jailbreak
? Using iFile copy your image from var/mobile/Media/DCIM/100APPLE (or 101APPLE)
? Paste it in System/Library/ProceduralWallpaper/ProceduralWallpapers.bundle
? Change Blue_1k_v2.png to Blue_1k_v2.png.bak (rendering the old image useless but not deleted)
?Rename your image to Blue_1k_v2.png
?Respring
Make sure you are using the first dynamic background (Light Blue) in settings because that's the image you replaced
Source: Got the dynamic background onto my wallpaper and changed the slide to unlock text. Howto inside. : jailbreak