How to Update to iOS 4.2.1 and Preserve iPhone 4 1.59.00 Baseband

By Guest Author on Feb 3, 2011

Now that Greenpois0n RC5 finally provides the long awaited iOS 4.2.1 untethered jailbreak (without the need of SHSH Blobs), many iPhone 4 owners with unlocked iPhones’ have been told to hold off upgrading to 4.2.1 as you will lose the ability to unlock (for now).

But thanks to TinyUmbrella developer @notcom, there is now a way to upgrade to iOS 4.2.1 without upgrading your baseband. Unfortunately, currently you will only be able to unlock your iPhone 4 on the older 1.59.00 baseband (modem firmware). So if you are not on the older baseband, you will not be able to unlock your iPhone 4.

For those of you with the older 1.59.00 baseband, follow the guide below to preserve your iPhone 4 baseband and unlock and jailbreak your iPhone 4 on iOS 4.2.1… Read More


Use iSHSHit to Easily Backup Your SHSH Blobs Directly on Your iPhone

By Jeff Benjamin on Dec 4, 2010

Backing up your firmware SHSH blobs is an important step if you ever decide to jailbreak your iPhone, because it allows you to downgrade your firmware if the need ever arises, and sometime it does.

Although Cydia takes a lot of the pain out of this for you by backing up your iPhone’s blobs itself, it gives me peace of mind to have a second copy backed up personally, just in case something goes wrong. Step inside, and we’ll show you how iSHSHit allows you to do just that…

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TinyUmbrella Updated for iOS 4.2.1 [Do it Now]

By Sébastien Page on Nov 26, 2010

TinyUmbrella has been updated to allow you to save your SHSH blobs on iOS 4.2.1 for iPhone, iPod Touch, and iPad. If you are a jailbreaker and have 2 minutes to spare, I suggest you use it to save your SHSH blobs.

In case you don’t know what TinyUmbrella is, it is a utility that allows you to save SHSH blobs, files that are necessary when you try to downgrade your iPhone to a previous iOS version. Without them, you couldn’t downgrade. While most people don’t care, it is especially helpful for jailbreakers… Read More


How to Update Your iPhone to iOS 4.1 Without Updating the Baseband

By Sébastien Page on Oct 11, 2010

This step by step guide/tutorial will show you how to update your iPhone 4 to iOS 4.1 while preserving the baseband. Because we will not update the baseband, you will still be able to run the latest iOS version available, you will be able to jailbreak using LimeRa1n, and you will be able to unlock your iPhone using UltraSn0w.

This method works for both Windows and Mac. It is pretty simple but it does require you to read the steps carefully. As usual when hacking your iPhone, you are proceeding at your own risks. This being said, this is how to upgrade to iOS 4.1 without upgrading the baseband…

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Don’t Forget to Save Your iPhone iOS 4.1 SHSH Blobs

By Sébastien Page on Oct 11, 2010

With the release of iOS 4.1.1 or even 4.2 right around the corner, it would be a wise thing to do to save your iPhone iOS 4.1 SHSH blobs either on Cydia, or locally with TinyUmbrella. Saving your SHSH blobs will be helpful if you ever want to downgrade your iPhone to previous firmware version.

Usually, Cydia does this automatically for you, but to be on the safe side, you can always run TinyUmbrella, which is what I just did. Here is how to use TinyUmbrella to save your SHSH blobs… Read More