Hi. I have flashed global combine firmware and still have that message after boot up.
I know sim card is fine because I use it in my other N900. I've been checking forum and there are reports of people having problem with locked N900. On top of it in the eBay advert I got that phone from seller said it works with EE but I didn't give it a second thought. Obviously he checked it as well. I'll give EE a call tomorrow but I'm not holding my breath on that. Any other suggestions?