Can I program and run your AT Command Set Interface firmware or the Wireless Xpress software solution from Silicon Labs on non-Lyra based devices?

No, this is not possible and not supported. You cannot program and run our AT Command Set Interface firmware or the Wireless Xpress software solution from Silicon Labs on other EFR32-based SoCs or modules like the EFR32BG22 and BGM220 for example. Both applications will perform a self-test and hardware compatibility verification on startup, therefore they will only execute on genuine Lyra modules.