Error: JTAG status contains invalid mode value
Software Development Kits > Troubleshooting
Because the Nucleo-WB55 is a recent evaluation kit release from STMicroelectronics, OpenOCD support is still under development. You may see the following error in the Upload or Program configstore output, but the programming continues.
Error: jtag status contains invalid mode value - communication failure
Polling target stm32wbx.cpu failed, trying to reexamine
This is normal and can be ignored for now.