iPhone 3GS from 5.1.1 to 4.3.3

[Rassan]

Hi I was wondering if there is anyway for me to downgrade my iPhone 3GS from 5.1.1 to 4.3.3 without having the 4.3.3 ash blobs saved

[xboxbml]

Nope...need blobs...

[whe8888]

Can it be done without shsh blobs for iphone 3Gs JB iOS 5.0.1 with old bootrom?

[xboxbml]

Nope...need blobs...old bootrom only comes into play as far as always being able to JB untethered...u need shsh blobs for the phone u r working on, for any version of iOS above 4.x

[EVO]

you can always downgrade to 4.1 without blobs

[xboxbml]

Yeah...that's true...but it's not 4.3.3...

[whe8888]

Do you mean to downgrade to 4.1 stock firmware?

[EVO]

Do you mean to downgrade to 4.1 stock firmware?

No downgrade to a custom 4.1 firmware to preserve your baseband for unlocking purposes

You can downgrade without needing any shsh blobs

In my opinion it's the best iOS for 3gs

[whe8888]

Thanks a lot. Can I use the redsn0w to create a custom 4.1 firmware? If so, does it matter which redsn0w version?

[2k1]

Use that or snow breeze from
http://ih8sn0w.com/

[whe8888]

Thanks. What are the procedures I need to go through before the completion of downgrading jb iPhone 3Gs to 4.1 using either redsn0w or snowbreeze?

[EVO]

use this guide here:

Apple, iPhone and iPad News | ModMyi - How To Jailbreak Using Sn0wbreeze v2.9

but make sure to download the sn0wbreeze v2.9.6 on ih8sn0w.com

when you open sn0wbreeze, instead of clicking the "Browse" button like in the guide, you can just select "Download iOS firmwares", then select your device and select the 5.1.1 iOS firmware and it will download for you

then proceed to the next steps

another thing, when you get to the option that allows you to select "Simple Mode" or "Expert Mode", select "Simple Mode", and then there will be a POP-UP Message asking if you want to "Activate your iphone".

Only click YES, if you DONT have an official sim card (like AT&T) to activate the phone

However, if you click YES, you "MAY" lose GPS function and Push notifications

if you have an official sim card, select No, then proceed onwards

[whe8888]

I need to downgrade a jb iphon 3Gs from 5.0.1 to jb firmware 4.1 but not sure if this procedure works for an upgrade to 5.1.1 or a downgrade to 4.1 from 5.0.1?

[EVO]

I need to downgrade a jb iphon 3Gs from 5.0.1 to jb firmware 4.1 but not sure if this procedure works for an upgrade to 5.1.1 or a downgrade to 4.1 from 5.0.1?

yes this method will work with downgrading to 4.1 from 5.0.1