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    Default will update lose my jailbreak

    i have an iphone 4 jailbroken with jailbreak me
    i am on 4.0.1 and baseband 01.59.00 my phone is also unlocked via ultrasnow

    if i update to the latest software will my phone have to be jailbroken again using limerain or greenpoison
    if i have read correctly then i will need to use tinyumbrella to preserve my baseband then update the software etc
    or am i better off leaving things as they are as my phone is running perfectly jailbroken and unlocked

    thanks guys



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    1) yes, one you restore ... you will loose your jailbreak .... but all other settings can be back up via third party software or itunes.

    2) tiny umbrella can help you preserve your baseband ...(carefully) read instructions!

    3) I use redsn0w ...

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    Quote Originally Posted by relboy View Post
    if i update to the latest software will my phone have to be jailbroken again using limerain or greenpoison
    if i have read correctly then i will need to use tinyumbrella to preserve my baseband then update the software etc
    or am i better off leaving things as they are as my phone is running perfectly jailbroken and unlocked
    Have you saved your SHSH for iOS 4.1 or for iOS 4.0.1 or iOS 4.0.2? If you don't have this (and it's now too late to request a 4.1 or 4.0.x SHSH from Apple) then you are best staying where you are.

    However if you ever want to update in the future, use tiny umbrella to save your SHSH for iOS 4.2.1 The Firmware Umbrella - TinyUmbrella

    Quote Originally Posted by alki View Post
    you will loose your jailbreak .... but all other settings can be back up via third party software or itunes.
    You also lose your unlock if you are not careful to preserve your baseband.
    What was not mentioned is that it is possible to jailbreak again - but this is a tethered jailbreak (at iOS 4.2.1) - which means that every time you restart your iPhone you will need to run redsn0w and select "just boot tethered for now" to allow your iPhone to boot sucessfully.

    Quote Originally Posted by alki View Post
    tiny umbrella can help you preserve your baseband ...(carefully) read instructions!
    Yes it can be used to do this restoring to iOS 4.1, but it doesn't work properly when restoring to iOS 4.2.1 - a fix is being developed.

    For a restore to iOS 4.1 you must have SHSH cached with Cydia or locally (via TinyUmbrella) already, it is too late to do this now.

    Quote Originally Posted by alki View Post
    I use redsn0w
    Do not use only redsn0w (for your primary jailbreak) if you rely on unlock. This is a general rule and applies to 3G, 3GS, iPhone 4 on all new iOS versions. You always need to first use some technique to prevent baseband update (tinyumbrella on iPhone 4, pwnagetool for iPhone 3G and 3GS).
    Please read the stickies & search forum before posting!
    How to report an iTunes restore/update fail in a useful manner
    -

    iPad 3G 64GB (4.3.3, Redsn0w) oldest SHSH 3.2.2
    iPhone 4 32GB (4.2.1, Redsn0w JB-monte) oldest SHSH 4.1
    iPhone 3GS 32GB (4.3.3; Pwnagetool) factory unlocked oldest SHSH 3.1
    iPhone 8GB (3.1.3; Pwnagetool) AT&T Locked - Unlocked with bootneuter

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