iphone 3G and Ultrasnow 1.2.4

[Nevrsadie]

I have an old 3G that I keep around as a backup. It is jailbroken and unlocked on ios 4.01 and has 5.13.04 baseband. I never upgraded to 4.2.1 becuase of the warnings about upgrading the bb to 6.15.
quoted from iClarified

IMPORTANT FOR UNLOCKERS
During this process you can update your baseband to the 06.15 version. If you are on 05.14 or 05.15 or higher you will need to do this to unlock. You do not need to do this for jailbreak only. Please read the following very carefully before deciding whether to do this.

1. There is no way to come back down from 06.15, and there’s no hiding the baseband version from Apple. You’ll be voiding your warranty in a very obvious way.
2. If some future baseband comes out with a critical fix, you won’t be able to update to it if it remains down in the 05.xx sequence (then again, you wouldn’t update to it if you wanted to keep your unlock anyway).
3. Starting with FW 4.2.1 if you have 06.15 on your iPhone you won’t ever be able to restore to stock firmware (it will fail). You’ll need to only restore to custom IPSWs (then again, if you’re unlocker you should already be doing that).
4. There are reports that 06.15 may disable your GPS. The iPhone Dev-Team is currently working on a fix.

Don’t update to 06.15 if you don’t need to! Only do this if you need the unlock and you’re stuck on 05.14 or 05.15, and you’re willing to assume the above risks.

My question is now that ultrasnow has been updated, is it safe for me to update to 4.2.1 without number 3 above happening?

 

[Crystal-RX]

When you upgrade your phone to 4.2.1, your baseband will upgrade to 05.14 which can't be unlocked by ultrasn0w.

The warning from dev team is only for those who install Ipad baseband onto their phone.

So, if you want to remain unlockable status, you need to cook a customs firmware 4.2.1 and restore to that. This you can do months ago and have nothing with the ultrasn0w update now. This update is so it is compatible with 5.0.1.

 

[gugy]

When you upgrade your phone to 4.2.1, your baseband will upgrade to 05.14 which can't be unlocked by ultrasn0w.

The warning from dev team is only for those who install Ipad baseband onto their phone.

So, if you want to remain unlockable status, you need to cook a customs firmware 4.2.1 and restore to that. This you can do months ago and have nothing with the ultrasn0w update now. This update is so it is compatible with 5.0.1.

Hi Crystal,
I went by your sugestion to clarified.com and once there I got a bit lost with all the different options for JB and unlock my iPhone 3G. Also some of the links there to download the software are broken.

I have an iPhone 3G with 4.2.1 and modem firmware 05.15.04
My wish is to unlock it, use overseas to make local calls using a local SIM card. I have Mac as my main computer and I would still like to manage my content using iTunes.

What's the easiest and best way to achieve this? Since you seem to be very knowledgeble about this stuff I hope you or anyone can shed some light.
Thanks again for any help!

 

[Nevrsadie]

Thanks, like I said I dont use the 3g, its just a backup. Every once in a while I check in to see if i can update it. I will use redsnow and make a new ipsw for it and see how it goes.

 

[Nevrsadie]

Nevermind redsnow doesnt support custom ipsw with iphone 3G. Pwnage tool only works on a mac, I am currently windows only. Now I remember why I didnt do this along time ago!

 

[Crystal-RX]

Hi Crystal,
I went by your sugestion to clarified.com and once there I got a bit lost with all the different options for JB and unlock my iPhone 3G. Also some of the links there to download the software are broken.

I have an iPhone 3G with 4.2.1 and modem firmware 05.15.04
My wish is to unlock it, use overseas to make local calls using a local SIM card. I have Mac as my main computer and I would still like to manage my content using iTunes.

What's the easiest and best way to achieve this? Since you seem to be very knowledgeble about this stuff I hope you or anyone can shed some light.
Thanks again for any help!

Follow instruction on this link;

http://iclarified.com/entry/index.php?enid=12947

Make sure you read the tutorial carefully because you might need to skip few step because you have this firmware on your phone already.

Come back here if you have any issue.

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Nevermind redsnow doesnt support custom ipsw with iphone 3G. Pwnage tool only works on a mac, I am currently windows only. Now I remember why I didnt do this along time ago!

Use sn0wbreeze.

 

[gugy]

Follow instruction on this link;

http://iclarified.com/entry/index.php?enid=12947

Make sure you read the tutorial carefully because you might need to skip few step because you have this firmware on your phone already.

Come back here if you have any issue.

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Use sn0wbreeze.

Thanks I will try this!