You could try using Intel FPT, but wont sure if it would work. Like what MeatWar say, you need a CH341A Programmer for it.
If both B250M Pro4 and Pro4 IB were identical for the most part, it should be compatible, you could read it here for IB counter part crossflashed to the original board bios: Z390 Phantom Gaming 4S/ac BIOS CROSSFLASH Resizable BAR - #6 by Koekieezz
You would need CSME Tools v11 for this, find it here: File folder on MEGA (Source: Intel (Converged Security) Management Engine: Drivers, Firmware and Tools (2-15))