Can I JB a 3GS on 4.0.1?

[Dubro]

Can I jail break my 3GS 4.0.1 (new boot rom and it is jail broken) using redsn0w? or does the phone have to be on 4.1? thanks

[keenpois0n]

that's confusing..are you asking if your phone can be jailbroken on 4.0.1? if so, go to jailbreakme.com

[Dubro]

Sorry... The phone is already jailbroken. The firmware is at 4.0.1. I want to know if I can use redsn0w? I read somewhere in the forum that your phone needs to be on 4.1 to use redsn0w and I'm trying to find out if that's true. So the real question is: What the minimum firmware version on a 3GS to use redsn0w?
Thanks.

[Simon]

4.1 minimum for the newer redsnow's. If you are already jailbroken why are you asking though?

[Dubro]

I thought if you use redsn0w it would take your phone to 5.0.1

[Simon]

Nope. Redsnow does not update firmware. Only itunes does that.

[Dubro]

ok. So what is the best way to get my phone on the latest firmware and also be jailbroken? thanks.

[Simon]

Do you require to be unlocked or are you on a official carrier?

[Dubro]

I am on AT&T. official carrier. But I would like it to be unlocked if possible. I go to Europe a few times a year.

[Simon]

What is your modem firmware in settings/general/about?

[Dubro]

05.13.04

[KidPoetic]

I have the same question as well. I have a JB/unlocked 3GS on 4.0.1 and I want to upgrade to 5.0.1 so I can use iOS 5. My firmware is 05.13.04 so am I able to jailbreak and unlock it? If so, how?

Thanks.

[Simon]

You need to use the latest version of snowbreeze or redsnow and make a custom firmware then. That way you can preserve your modem firmware since that modem firmware is able to be unlocked. DO NOT update or restore to a regular 5.0.1 firmware as that will update your modem firmware and you wont be able to unlock anymore (at least not easily).

After making the custom firmware open itunes, hold shift (windows) or option (mac) and press restore. A window will pop up where you can choose the custom fimrware you made.

[Dubro]

OK,,,Run iTunes and navigate to the custom firmware that I made with redsnow. Then after the custom firmware is install will the phone be jailbroken and updated to 5.0.1? Also will the phone be unlocked and will GPS still work? thanks

[Simon]

If you use redsnow cydia wont be installed automatically after the custom restore, so you would need to run it again after to install cydia. If you use snowbreeze make sure you chose not to activate the custom firmware. Snowbreeze adds cydia itself so after the custom restore cydia will be there. After that install ultrasnow from cydia to unlock and you are done. GPS should work fine. That only breaks if you install the ipad baseband to unlock, which you do not have to do sice you have a good modem firmware for unlocking already.

[Dubro]

ok....which would you use? Redsnow or snowbreeze?

[Simon]

I would probably go with snowbreeze for you since you only have to run it once.

[Dubro]

ok... when i run snowbreeze i should just click on the "simple mode" option. correct? thanks

[Simon]

Yes

[KidPoetic]

Here's my problem. I used redsn0w, got the custom firmware, used the option button to restore, but now it says there's an error 1600.

what does that mean?