Downgrade 3Gs with OS 5.0.1 to 3.1.3 ???

[Cruch]

Hi!

I have iOS 5.01 with 05.16.05 on the Fido network in Canada.

When I first got my phone, it was very fast and worked perfect.

Now after all the upgrades, it's SLOW. Very slow. Also, the Bluetooth audio will not work with my car stereo. People claimed that it only worked when they went back to 3.1.3 and that will resolve the issue.

So is there a way I can get back to 3.1.3. I tried to check on how to do this, but I can only find out how to get to 4.x.

Any help would be greatly appreciated.

Thanks

[Cruch]

bump?

[Cruch]

Bump??

[Goof]

You can only downgrade if you have SHSH files saved for that version.

If you have 3.1.3 SHSH files saved then you can downgrade your iPhone to 3.1.3

[xboxbml]

Yes...I believe if u had 3G u could just go there, but u need shsh blobs for 3GS...they changed hardware..

[iYeow]

My suggestion is to downgrade to 4.1. Just put your iphone into normal dfu mode and restore to 4.1. Use Ireb 5 to kick out error 1015 and you don't need to use Tiny Umbrella for your 4.1 downgrade.

[Cruch]

What OS did my iPhone 3GS come with when I got it? Not sure..