Keil MDK5 and not genuine STM32F103


I'm aware that is weired question but some time ago i've bought in my local supplier a couple of uC STM32F103. I wanted to use them in prototype board. But they seems to be fake, despite they looks exactly as oryginal.

The IDCODE is 0x2BA01477 insted 0x1BA01477

Is is possible in Keil to force not to check this IDCODE because when I try to load the program or debug Keil gives me information that it is not geniune ST Device and abort connection.