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Thread: 3GS 4.0.2 downgrade with previous 3.1.2 and saved shsh

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    Default 3GS 4.0.2 downgrade with previous 3.1.2 and saved shsh
    Hey guys,

    I have 3gs that I had to restore to 4.0.2 (sigh) but previously had it at 3.1.2, jailbroken and saved shsh blobs. Old bootrom.

    I want to go down to 3.1.2 and jailbreak it again.I got a little stuck at the step after you get two expected 1015 Errors when downgrading. I was trying to run blackrain but it says it stopped working (after i click on 'make it rain'). What do i do now? I was thinking about trying redsnow but not sure....

    Please, anyone knows?

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    Retired Moderator iYeow's Avatar
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    Once you are at 3.1.2, Use Redsn0w 0.9.2 to jailbreak it and then use Custom Firmware to restore thereafter if you plan to go for IOS 4.0.

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    ok guys! Thanks to yeow202 - all i needed was Tiny Umbrella 4.1.3 - to kick me out of the 'Connect to iTunes' screen - and I was on 3.1.2.
    Jailbroke it at jailbreakme.com

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    Retired Moderator iYeow's Avatar
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    Quote Originally Posted by alenaflorida View Post
    ok guys! Thanks to yeow202 - all i needed was Tiny Umbrella 4.1.3 - to kick me out of the 'Connect to iTunes' screen - and I was on 3.1.2.
    Jailbroke it at jailbreakme.com
    You shouldn't use jailbreakme.com , since you have the oldbootrom, go with Redsn0w jailbreak and then from now on, you can always restore to Custom Firmware.
    If you use jailbreakme.com, you cannot use custom firmware for any upgrade.
    So my advice is do it again by restoring to 3.1.2 and then use Redsn0w 0.9.2 or Blackra1n RC3. to jailbreak.
    Only Redsn0w, Blackra1n are compatible with CFW.
    Spirit and Jailbreakme.com are not compatible with CFW.

    Edit :
    Once you have jailbroken your 3.1.2 with either Redsn0w or Blackra1n.
    You can donwload SnowBreeze 1.6.2 or 1.7 or for Mac Pwnage tools 4.0.1 to create a cfw of iOS 4.0 not 4.0.1
    Once created , it will be placed on your desktop and it is called Snowbreeze..4.0.ipsw.
    Put your jailbroken 3.1.2 into recovery mode
    Do the Shift + Restore to Snowbreeze..4.0.ipsw
    Once you are done, you are already jailbroken at iOS 4.0.
    Last edited by iYeow; 2010-09-12 at 10:41 PM.

  5. The Following User Says Thank You to iYeow For This Useful Post:

    alenaflorida (2010-09-14)

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