The dreaded SIM card error has caught my N9 too. I have read many posts on this forum and other Meego forums to no avail. The latest on the saga is that I keep getting PIN code requests (SIM card PIN) every now and then. When that is provided, the carrier network is detected for a brief period before the SIM card error is displayed again. I must add that the last --flash-only=cmt worked and showed success! I've tried flashing numerous times and I am not sure what could be going wrong here. Its a unlocked N9 64 GB, product code 059J228 (Middle East version, I believe!). Any help much appreciated.