Version 0.9.15b2 fixes a few issues for 3GS owners: old-bootrom awesomeness is no longer forgotten directly after a restore, and iPad ****band upgrade/downgrade support is fixed (same production date cutoffs apply!). If your 3GS is currently tethered at 6.0 even though you have an old bootrom, just re-run redsn0w’s Jailbreak step (no need to restore). Don’t forget you can add some pizzaz with your own boot logo or a nerdy verbose boot.
How To Downgrade iPhone 4, iPhone 3GS, iPod Touch 4G From iOS 6 Using Redsn0w
iPhone Dev team released a new version of Redsn0w over the weekend, which makes it a lot easier to downgrade pre-A5 devices such as iPhone 4, iPhone 3GS and iPod touch 2G from iOS 6.0 to iOS 5.x.x using the direct restore option. In this guide, we show you how to downgrade your iPhone 4, iPhone 3GS or iPod touch 4G from iOS 6.0 to iOS 5.x.x using Redsn0w. Some important points before we proceed: This guide is meant for iPhone 4, iPhone 3GS and iPod Touch 4G users. It is currently not possible to downgrade the newer iOS devices such as iPhone 4S, iPad 2 and iPad 3. This method will work only if you've saved your SHSH blobs for iOS 5.x.x either using TinyUmbrella or had jailbroken your iPhone when it was running iOS 5.x.x and launched Cydia at least once, which would have cached the SHSH blobs on its servers. Since the method restores your iPhone with iOS 5.x.x, you need to go through the process of setting up your iPhone from the backup, which can take sometime. Please note that when you restore from backup, you will only see only iOS 5.x.x or lower compatible backups. Here are the step-by-step instructions to downgrade your iOS device using Redsn0w: Step 1: Download RedSn0w 0.9.15b2 (RedSn0w 0.9.15 beta 2) from this link. iPhone Dev Team Releases Redsn0w 0.9.15b2 Includes Some Bug Fixes Step 2: Download iOS 5.x.x firmware file for your iPhone 4/iPhone 3GS from this link or for iPod touch 4g from this link. Step 3: Turn off your iOS device and connect it your computer. Step 4: You will now need to put your iOS device into the DFU mode. You can follow these simple steps to put your iPhone in DFU mode: (a) Hold the Power button on iOS device down for 3 seconds: (b) Now simultaneously hold the Home button and keep the two buttons pressed for 10 seconds: (c) Now release the Power button while keeping the Home button pressed until your device's screen goes black or iTunes pops up a message telling you that it has detected an iPhone in recovery mode. Step 5: Double click the Redsn0w zip file and extract the application to the Redsn0w folder. Navigate back to the Redsn0w folder and launch the Redsn0w application. Please ensure that you have launched the latest version of Redsn0w. ******s 7 users should run the exe in ******s XP compatibility mode (right-click on the Redsn0w exe and select Properties, then select the Compatibility tab and select Run this program in compatibility mode for ******s XP). ******s XP and ******s 7 users should run Redsn0w as ‘Administrator’ (right-click on the Redsn0w exe and select 'Run as an Administrator'). Step 6: Redsnow will report that your iOS device is connected in DFU mode (For example: Connected: iPhone 4 (DFU mode)). Click on the Extras button, then click on SHSH blobs button, followed by the Stitch button. Step 7: Click on the IPSW button, here browse to the ******** you had downloaded the iOS firmware file and select the .ipsw file. Step 8: In the next step, you need to retrieve the SHSH blobs for the downgrade process. If you've them stored locally then click on the Local button or click on the Cydia button, if you want Redsn0w to download them from Cydia. If you had jailbroken your iOS device while it was running iOS 5.x.x and launched Cydia at least once then it would have cached the SHSH blobs on the server. Redsn0w will show the progress bar as it Fetching blobs from the server. That's it, your iOS device should successfully restore to iOS 5.x.x. Note: If you get "Couldn’t restore Mismatched APTicket" during the restore process then don't panic, simply repeat step 4 to 7 and the restore should work successfully this time.