How do I downgrade my PSP's firmware?

Is there a Firmware downgrade from iOS4 4.2.1 for the iPhone 4 that doesn't require SHSH blobs?

  • I have been trying to jailbreak my iPhone 4(that is on the 4.2.1 firmware) since I got it in December. I've read countless guides on downgrading the firmware from 4.2.1 to 4.1 but all of them require to have SHSH blobs from firmware 4.1 downloaded on your iPhone. So I was wondering if there was a Firmware downgrade from iOS4 4.2.1 for the iPhone 4 that doesn't require SHSH blobs from a previous firmware? Or if there's an untethered jailbreak for iPhone 4 iOS4 4.2.1 out yet?

  • Answer:

    No there is not... sorry you need to save your SHSH blobs after every upgrade so you can revert back if you need to

Tony James at Yahoo! Answers Visit the source

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sorry, there is not,

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