Apple ipod

I found a jailbroken iPhone is lost. How I can reset it?

I tried to return to its rightful owner, T-Mobile, but could not help (which is the phone carrier.) I went to the Apple store and just said "good chance. I tried to restore factory settings, but I do not know the password (obviously) and do not know what is the firmware. Attempts to systematically restore the cause "this device is excluded from construction called "error. Any chance I can get this thing restored? By the way … I have a iPhone. Do you want to put my ATT SIM card that I hear? I about it, but I do not want no problems cause my good phone. Thanks

The force recovery mode. Open iTunes and the cable connected to the computer. Hold Home button while connecting the phone. Hold down the Start button. iTunes finally say is fashionable iPhone Recovery or something like that. then press restore if that fails, requires DFU mode. You open iTunes. Hold the phone plugged in. Start button and the button above to the right, same time. Once an Apple logo appears on the phone to release the top button. Hold down the Start button. Then you will receive the same message you are looking forward. Good luck!

No sim card installed?