Developer version of iOS 4.1 firmware for iPhone 3G, 3GS and iPod Touch 2G and 3G was released recently. Being tagged as beta, iOS 4.1 might be buggy and you might feel need to downgrade your firmware to your previous version and if you have a jailbroken iPhone on iOS 4.0, you might want to backup your SHSH Blobs to Cydia first so that you can jailbreak your iPhone on iOS 4.1 as well.
Before updating to iOS 4.1 beta, you must save SHSH Blobs (ECID SHSH) files of your iPhone 4. Just follow simple steps listed below to save SHSH blobs using TinyUmbrella.
Steps to Backup SHSH Blobs ECID files of iPhone
Step 1 - Download the TinyUmbrella tool.
Step 2 - Plug in your iPhone and iPod Touch
Step 3 - Launch the TinyUmbrella Tool.
- Just select the device and the currently selected device’s ECID will be populated in the ECID field and the proper default firmware will be selected appropriate to the iPhone and iPod Touch.
- If you device is on iOS 4.0 then you can press the ‘Save my SHSH’ button and wait for the process to finish.
- If you are not on iOS 4.0 then check ‘Advanced Options’ and then next to ‘Device/Version’ change that to 4.0. Now press the ‘Save my SHSH’ button and wait for the process to finish.
Download TinyUmbrella to Save ECID SHSH Blobs of iPhone, iPod Touch on iOS 4
Related posts:
- TinyPwn: Backup SHSH Blobs & Jailbreaks All iOS Devices using Custom IPSW Files
- How to Downgrade iOS 4.3.2 to 4.3.1 or Lower on iPad, iPhone, iPod touch [Guide]
- Apple Releases iOS 4.3.2 for iPad, iPod touch, iPhone [Direct Download Links]
- How to Downgrade iOS 4.3.1 to 4.3, 4.2.1, 4.1 on iPad, iPhone, iPod touch [Guide]
- Backup iPhone 4 Activation Using SAM Module after IMEI Factory Unlock