DFS Studio (iOS Tools) allows you to explore IOS based device, read device settings, explore files, reboot device to any states.
Also, you can program carrier settings on CDMA iPhone 4 and iPad 2 without jailbreak
iOS Tools features:
One-Click Reboot, Reboot to Recovery(and exit) mode your device
Quick Read and Save IOS device properties
Explore your IOS device files, open them by one click, copy files and folders
Program network carrier settings (SPC, MSL, AKEY/SSDA/SSDB, MIN, MDN, IMSI, NAM, PRL and others) to your CDMA iPhone 4 and iPad 2 without jailbreak(all IOS versions)