iPhone 3G - Can't unlock

[Deoxir]

I got my old iPhone 3G and got locked after downgrade and can't active it,Activation Sim don't work,nor redsn0w does,Would Appriciate some help.

Thanks :]

[iYeow]

What firmware are you at now ? Did you hit restore /upgrade in itunes

[Deoxir]

was on 4.1 then i downgraded 3.1.3 baseband saved 5.13.04

[iYeow]

Since you are now at 3.1.3, you can run Redsn0w 0.9.4 but browse to 3.1.2 ipsw to hactivate and jailbreak at 3.1.3. Unlock with Ultrasn0w again from Cydia.

[Deoxir]

but ain't got activate/unlock on 0.9.4 : /

[iYeow]

It should eventhough it doesn't have the option, just run Redsn0w from Emergency Screen.
Read this :
How to Jailbreak 3.1.3 iPhone 3G & iPod Touch 1G/2G Windows & OS X

[Deoxir]

the problem is the activation,and when I do as web u gave me says 3G gets stuck on "Downloading Jailbreak Data"

[i.Annie]

That happens if you're trying to jb a certain fw and you're not actually on that firmware. Double check with f0recast from ih8sn0w.com that you're actually on 3.1.3.

[Deoxir]

It's on 3.1.3 but none redsn0w working to activate,nor the activation sim ;/

[i.Annie]

Then try another computer is all I can say. Redsn0w does the best job for 3.1.3 on a 3G.

Try Sn0wbreeze 1.4, create a custom 3.1.3 fw in expert mode and select "activate" (where you'd normally select adding winterboard and Cydia). Then build the fw. Get iReb from ih8sn0w.com. Run iReb and shift+restore to the custom fw you built.

You might have some YouTube and push problems, but being on 3.1.3, you can install pushfix or pushdoctor to correct the problems.

[Deoxir]

ok thx buddy :]

[iYeow]

It is actually Snowbreeze 1.5.2 to create a custom firmware of 3.1.3

[i.Annie]

I used 1.4 for my iPhone 3G before I sold it. But I'm sure you're very correct, Yeow