Dont use OFC, you can just reflash with the leaked PR1.3 bin file. Although most likely you need to have B2 or newer.

Oh, and in most coutries its illegal to use sim cards with devices beginning with 0044-imei, unless you have special permit from your country operator authority. Usually employees of phone manufacturers are only permitted to use that imei range devices. So even if you manage to get firmware up and running, you will be breaking the law (depending of course the country you are in) if you try to use it on real network.