Accidentally upgraded my unlocked & jailbroken iPhone 3G. Now - "invalid sim"

[Yajeeca]

I have an unlocked and jailbroken iPhone 3G (and i believe it had a ver. 3.1.2 because now it says it is on ver. 3.1.3 after the upgrade) that I purchased in the US. Recently, while connected to my computer I decided to do an upgrade with iTunes. And now my iPhone is saying "Invalid Sim" on the top left hand side. I cannot make calls on it now. Please help! Most postings under "invalid sim" online are from more than a year ago and I am not sure of the same processes to unlock it apply. I am now in Australia and using an Optus sim card when I am in the states I was able to use my iPhone and make calls with a T-Mobile sim card. Basically, my iPhone was working fine before the upgrade! Another thing is when it's connected to iTunes, a message appears saying Invalid Sim Card on iTunes unless I turn the phone to Airplane mode...when I do that iTunes seems to recognise my iPhone again. It helps but I still need to fix it so I can make calls. Can someone please help! Thanks!

[izwan]

Dear yazeeka, meaning that your iphone now is lock. So, there is no way to unlock your phone until as of today. Welcome to the long waiting club until unlock ver is release

[befi]

I had same problem, mine was even jailed completely...I jailbroke it with snowbreeze, installed fuzzyband from Cydia to downgrade it to modem firmware 04.26.08 ( it depends what kind of firmware you had before). After that I`ve unlocked it with redsnow 9.4.....now it works great

I wish you luck

[S11DJ]

hey, how will i know what knd of firmware i had before??

[Yajeeca]

Thanks Izwan and Befi. I can't use my sim card so I am tipping my phone is now locked again and I also have lost Cydia so I am tipping that means my iPhone is jail locked again too. I bought the iPhone onlne Jailbroken and Unlocked. How can I find out what firmware I had before? How do I install Fuzzyband if I have now lost Cydia?? I am in downunder now and things with the iPhone are different here too. Seems that any provider can supply you with iPhone unlike the situation in USA with ATT. PLEASE HELP ME!

[S11DJ]

i'm in the exact same boat, i guess i'll keep an eye on this thread..

just saw this in one of the forums..

<tongue-in-cheek> I just updated my iPhone, and now all my apps and Cydia are gone!!!!!! What happened???? I need them back!!!!! Someone help please!!!!!!!!!! </tongue-in-cheek> Just thought I would post this, in humor, to see how long it takes until someone posts the same thing seriously.

(that'll be us then)

i accidentally upgraded mine when i was hung over and wasn't in control of my actions. fecccck.