Jailbreak iOS 6.1.3
Redsn0w: Fichier IPSW:
Windows ICI
Mac
Step 1: Download both the Redsn0w jailbreak 6.1.3 tool and the corresponding iOS 6.0 IPSW for your device, both can be found in this article’s download section, which is below.
Step 2: After Redsnow has successfully downloaded, if you're on a Windows-based PC, right click the utility, set compatibility mode to Windows XP Service Pack 2 and grant the program administrative privileges. Mac users needn't worry about compatibility, they can skip to the third step.
Step 3: With Redsn0w open, navigate to Extras and then Select IPSW. In the selection window that pops up, point the jailbreak utility at the iOS 6.0 IPSW downloaded in the first step, not 6.1.3. Once the firmware file has been properly identified, click back to the main Redsnow menu.
Step 4: Proceed to jailbreaking by clicking the main Jailbreak button. After ensuring that the option to Install Cydia was checked by default, proceed to the next screen.
Step 5: Once you've reached this point, Redsn0w will suggest turning off your device prior to entering DFU mode, however, it's possible to bypass this stage and simplify the process. Plug your iPhone or iPod touch into your computer via a standard 30-pin USB cable and continue to the sixth step.
Step 6: Press and hold both the home and power buttons together for a total of ten seconds. Once exactly ten seconds has passed, release the top power button and continue to hold the home button for an additional ten seconds – remember, DFU mode is simply a black screen.
Step 7: If DFU mode was entered correctly, redsn0w will automatically proceed to the jailbreak process. Wait for your device to be jailbroken and to reboot, once it has, you'll be required to boot tethered.
Source: http://www.jailbreakevasi0n.com/jailbreak-6.1.3-semi-untethered-iphone-4-3gs-ipod-touch/
Windows ICI
Mac
Step 1: Download both the Redsn0w jailbreak 6.1.3 tool and the corresponding iOS 6.0 IPSW for your device, both can be found in this article’s download section, which is below.
Step 2: After Redsnow has successfully downloaded, if you're on a Windows-based PC, right click the utility, set compatibility mode to Windows XP Service Pack 2 and grant the program administrative privileges. Mac users needn't worry about compatibility, they can skip to the third step.
Step 3: With Redsn0w open, navigate to Extras and then Select IPSW. In the selection window that pops up, point the jailbreak utility at the iOS 6.0 IPSW downloaded in the first step, not 6.1.3. Once the firmware file has been properly identified, click back to the main Redsnow menu.
Step 4: Proceed to jailbreaking by clicking the main Jailbreak button. After ensuring that the option to Install Cydia was checked by default, proceed to the next screen.
Step 5: Once you've reached this point, Redsn0w will suggest turning off your device prior to entering DFU mode, however, it's possible to bypass this stage and simplify the process. Plug your iPhone or iPod touch into your computer via a standard 30-pin USB cable and continue to the sixth step.
Step 6: Press and hold both the home and power buttons together for a total of ten seconds. Once exactly ten seconds has passed, release the top power button and continue to hold the home button for an additional ten seconds – remember, DFU mode is simply a black screen.
Step 7: If DFU mode was entered correctly, redsn0w will automatically proceed to the jailbreak process. Wait for your device to be jailbroken and to reboot, once it has, you'll be required to boot tethered.
Source: http://www.jailbreakevasi0n.com/jailbreak-6.1.3-semi-untethered-iphone-4-3gs-ipod-touch/