Jailbreak Ios 4.3.3 on iphone 4/3gs(GSM) & Ios 4.2.8 on Verizon with Redsn0w

Step 1: Download these files:-

• Download Redsn0w 0.9.6rc15( Windows) 
• Download IOS 4.3.3 for iPhone4 / IOS 4.3.3 IPhone 3gs / IOS 4.2.8 Iphone 4(CDMA) / Ios 4.3.3 Ipad2(wifi) / Ios 4.3.3 for ipad 2(GSM) / IOs 4.3.3 for ipad2(CDMA) / IOs 4.3.3 for ipad1 / IOs 4.3.3 for  iPod touch 3g / Ios 4.3.3 for ipod touch 4g.  
• Double click the Redsn0w zip file and extract the application and launch it. 

Note:- If you’re a Windows XP user then try running Redsn0w as ‘Administrator’ (right-click on the Redsn0w exe and select 'Run as an Administrator') while Windows 7 users should run the exe in Windows XP mode (right-click on the Redsn0w exe and select Properties, then select the Compatibility tab and select Run this program in compatibility mode for Windows XP).

• Click on the Browse button and select the respective Ios 4.3.3/4.2.8(downloaded IOs)
• Redsn0w will verify the firmware file and inform you if it has successfully identified it. Click next to proceed.
• After being verified, select the options install cydia(select install ipad baseband if you are carrier locked  iphone 3gs users & have mistakenly upgraded baseband above 5.13) other options are optionals.
• Get your idevice in dfu mode with the onscreen information and wait for your device to get jailbroken.

Once it completely done and all the process ends in idevice and your idevice is jailbroken now you will find cydia on homescreen. Congratulations, you have succesfully jailbroken your idevice.
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