Update iPhone 4 iOS 4.2.1 without Baseband 1.59.00 Upgrade | iPhone

The following paragraphs summarize the work of Update iPhone 4 iOS 4.2.1 without Baseband 1.59.00 Upgrade | iPhone experts who are completely familiar with all the aspects of Update iPhone 4 iOS 4.2.1 without Baseband 1.59.00 Upgrade | iPhone. Heed their advice to avoid any Update iPhone 4 iOS 4.2.1 without Baseband 1.59.00 Upgrade | iPhone surprises.
email If you update iPhone 4 to iOS 4.2.1 after that by means of baseband determination too upgrade to 03.10.01 and at the moment you can't unlock petroleum baseband. Here is the solution, how to update iPhone 4 to iOS 4.2.1 with no updating its baseband. We can attain so as to by,by means of TinyUmbrella. Lets see how to preserve iPhone 4 baseband 01.59.00 by,by means of TinyUmbrella as,at the same time as updating iOS 4.2.1.

Note: Use petroleum direct to update iOS 4.2.1 on iPhone 4 only.

Step-1

• Download TinyUmbrella OSX | Windows
• Download iOS 4.2.1 for iPhone 4

Step-2

Connect iPhone 4 by means of computer
Run TinyUmbrella and hit the “Save SHSH” button,

See the SHSH for iPhone 4 4.2.1 in the catalog on TinyUmbrella

Step-3

Now hit the “Start TSS Server” button and stay it running

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Step-4

Update iOS 4.2.1 iPhone 4

Now its occasion to update iPhone 4 to iOS 4.2.1.

Note: Before updating iOS create certain present is no error occurred in TinyUmbrella, clack on Log tab, if TSS Server is organization after that you are high-quality to go,shift on the after that step.

Run iTunes, Select by means of device as of the absent panel.

Hold downward Shift key as of keyboard on Windows or Alt/Option key on Mac and after that press the “Restore” button in iTunes.
Now browse and select the iOS 4.2.1 firmware folder for iPhone 4 so as to you contain downloaded in step-1
You determination see petroleum 1013 error – baseband update failed, petroleum is come again? we are doing.

You contain productively update iPhone 4 to iOS 4.2.1 with no updating its baseband.

Now if you desire to jailbreak iOS 4.2.1 create sure this: How to Jailbreak iOS 4.2.1 iPhone 4 Untethered

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