iOS 6.1.3 Jailbreak Untethered Download
Apple Software Update iOS 6.1.3 Compatibility:

iPhone 5 GSM
iPhone 5 CDMA
iPhone 4S
iPhone 4 GSM
iPhone 4 CDMA
iPhone 3GS
iPad mini (GSM, CDMA, Wi-Fi)
iPad 4th-generation (GSM, CDMA, Wi-Fi)
iPad 3rd-generation (GSM, CDMA, Wi-Fi)
iPad 2 (GSM, CDMA, Wi-Fi)
iPod touch 4th-generation
iPod touch 5th-generation

New iOS 6.1.3 Untethered Jailbreak Working For All iDevices , iPhone 5,4S,4,3gs & iPad 4,3,2,1