I’m developing a Zigbee end-device app on STM32WB55 (Zigbee_OnOff_Client_SED), following ST’s Zigbee guide, but my debugger keeps showing “Target is not responding, retrying…” . I disabled low power (CFG_FULL_LOW_POWER=0 / CFG_LPM_SUPPORTED=0), set Connect under reset in CubeIDE, and updated the ST-LINK, but the issue persists and the node won’t join my network. Could this be the CPU2 wireless firmware (RFD vs FFD) or a FUS/Option Bytes problem? If anyone has a proven recovery checklist (mass erase under reset, correct CPU2 image, OB settings, etc.) or other tips to make SWD reliable and get the device to join, I’d really appreciate it.
