How to download service pack into the CC2564MODN?


It is stated in the CC2564B Wiki that one must load service pack into a CC2564B based CC2564MODN before using it. I have a custom board based on stm32f4x MCU and I won't use any third-party BT stacks but write my own. I have downloaded the latest service pack ( archive  from here - What I see inside the archive is a couple of files with *.bts extensions. How to convert them into something more sensible and download into the chip?

Thank you in advance,