Originally Posted by myklcz

Sure, ipcc signed by Apple works fine with 3.1, if they have tethering enabled in carrier.plist file.

Anysoul have apple private key there?

I said I'll try .

As soon as I get to my office, I'll try signing the profile, which should be easier than expected.

Hi guys. I'm from Italy and i have jailed iPhone 3Gs factory unlocked. Yesterday updated my phone to 3.1 and definitively loss tethering option (i'm using a non-Apple carrier so i built a self-constructed IPCC in the past to enable MMS and Tethering...the first fully functional with my carrier in Italy).

Now MMS are working for me instead of Tethering (option disappeared).

Taking a look inside a working IPCC file of another italian Apple-supported operator with Plist Editor i found something intresting into Info.plist file. There are some keys that can be useful to understand "signing" method IMHO like:
- CFBundleSignature
- ResourceRules.plist

What do you think about it? If Apple signs IPCC files with digital signature will be impossible IMHO to find a workaround on jailed iPhones.

Notes:
1) Downgrade from 3.1 to any version below is now forbidden
2) Probably will be impossible, for now, to jailbreak iPhones with 3.1 if you don't have ECID, iBEC and iBSS codes.

Thank you guys and good luck!

Originally Posted by JSN1

I said I'll try .

As soon as I get to my office, I'll try signing the profile, which should be easier than expected.

Thats an interesting one...

Signed...

Tried IPCC and MobileConfig... It just doesn't match the current format...
When I use the signed MobileConfig something really nice, just let me work it and I'll come back later.

Originally Posted by JSN1

Signed...

Tried IPCC and MobileConfig... It just doesn't match the current format...
When I use the signed MobileConfig something really nice, just let me work it and I'll come back later.

Good man!

How do you sign files? Developer certificate?

Got it to use another carrier bundle with my sim! Signed, it looks good! I'll keep you up.

Some carriers offer tethering, has someone with an official carrier has been able to do this?

Why?

I signed the profile for my current carrier and I couldn't get it to work.
Used a signed profile from an official tethering carrier... No go...

I think tethering is gone for everybody.

Someone from:

Spain - movistar
NZ - Vodafone

Could please verify if tethering is working for you?

How do You sign the profile? I have CZ Vodafone ipcc profile from Vodafone, that is working with 3.1 OS, but I'm with O2 and they haven't released any profile from OS 3.0 came out

Originally Posted by JSN1

I think tethering is gone for everybody.

I am afraid you're right. The APNs have a signature blob since beta2. The only one that comes without is the unknown carrier bundle...
We'll have to wait for the jailbreak to find out whats going on.