Iphone 3gs ludite respectfully asks for help
I recently bought a jailbreaked 3gs with no sim and I am totally unused to apple iphone. Foolishly, I thought it best to restore the device to factory settings to clear all the old data. After doing this, I could not activate the iphone past the sim card stage. So then I used itunes to update the phone to the latest version, thinking it might work. NO Way! so then I used this link here How to Activate iPhone 3GS & 4 without Sim Card iOS5.1! | iHelpCorner with redsn0w to jailbreak. It all went OK, but at the end I had an 'unrecognised footprint' error after the process. (tried lots of times)
I'm finding lots f possible scammers advertising paid for solutions, although I'm happy to do this myself, I really don't know which way to turn.
The only details I have are the phone IMEI / Serial Number (I know it's week 39 2009) and Model 3gs. Access to both PC and a MAC with itunes. I'm looking to use an o2 sim (UK) that I already have.
Is there a sure fire way to recover this iphone please?
Really appreciate your support! :)