How to: Jailbreak iPhone 3GS, 3G iOS 4.0.1 Doing this will let iTunes to prompt you about future updates from Apple.
You must now remove 74.208.105.171 gs. line from the host file and save it. (Click to enlarge) Step 3 – Restoring the Firmware
#USING TINYUMBRELLA TO DOWNGRADE MAC OS X#
Mac OS X users needs to copy the edited hosts file from desktop back to /etc/ directory and replace the older one. Copy it on your desktopĪdd the following line at the end of the hosts file and then save and close the file: Go to \etc\ directory and locate hosts file. Right click on Notepad app and select Run as Administrator. NOTE: Win 7 and Vista users MUST run Notepad with admin privileges. Go to C:\Windows\System32\drivers\etc\ and locate hosts file. Now we are going to redirect iTunes from Apple Servers to Saurik’s server. If downgrading to iOS 4.0.2, 4.0.1 or 4.0, you MUST follow Step 2. Once Apple stops signing iOS 4.1, Step 2 will become compulsory for iOS 4.1 as well. If you’re downgrading to iOS 4.1 then you can skip Step 2 and continue from Step 3. Note: Apple is currently signing iOS 4.1. Put your iPhone into DFU Mode (How to: enter DFU Mode) **We assume that you’ve SHSH blobs saved via Saurik’s server.ĭownload your desired firmware for which you’ve SHSH blobs saved and want to downgrade: Now in order to get out of recovery mode, hit the “ Kick Device Out of Recovery” button on TinyUmbrella right below the Start TSS Server button or you can also use RecBoot. You’ve successfully downgraded your iPhone/iPod Touch firmware. ITunes will bring up error 1015, 1013 or 1011 message. Select the downloaded firmware (iOS 4.1, iOS 4.0.1 or older) and let the restore process complete.Hold down the Shift (Windows)/Alt (Mac) key and hit the Restore button.(If you already have them in your PC, drag and drop the SHSH blobs in the TinyUmbrella window then hit the display SHSH blobs button to confirm). Hit the Display SHSH button to confirm that downloaded SHSH blobs has been cached by TinyUmbrella for 4.1, 4.0.1 or older.Put your iPhone into DFU Mode (How to: enter DFU Mode) Step 2 – Start TSS Server Select your device, firmware (the one for which you’ve SHSH saved at Cydia 4.1, 4.0.1 or older) and Cydia as Location.Connect your device, Fire up the TinyUmbrella and Check mark the Advanced Options.If you’ve SHSH blobs saved on Saurik’s server via Cydia, download them into your computer first.
#USING TINYUMBRELLA TO DOWNGRADE HOW TO#
How to: Save SHSH blobs for iPhone, iPod Touch How to Downgrade iOS 4.2 to iOS 4.1, iOS 4.0.1ĭownload your desired firmware for which you’ve SHSH blobs saved and want to downgrade to:ĭownload TinyUmbrella from the link below: IMPORTANT: iPhone 4, iPhone 3GS, 3G, iPod Touch 4G, iPod Touch 3G, 2G users MUST have SHSH blobs saved for 4.0.1/4.0 firmware in order to downgrade from iOS 4.2.