Question
STM32H573I-DK bricked - RSS_DA not booting, cannot perform DA regression
Hello,
My STM32H573I-DK board is bricked after a failed provisioning attempt.
What happened:
- Accidentally changed PRODUCT_STATE from Open (0xED) to 0x17 (Provisioning) via programmer
- Then an AI coding assistant (Copilot) attempted some configuration via DFU mode and enabled TrustZone
- I no longer have access to the PC where this was done
Current symptoms:
- SWD: "Unable to get core ID", "Cannot connect to access port 1"
- DA discovery (debugauth=2): "The target is unable to boot on RSS_DA or is in OPEN mode"
- DA regression (debugauth=1) with default STM32CubeFW_H5 keys: "Unable to detect DBGMCU Mailbox" or "unable to boot on RSS_DA"
- DFU (USB0): "Target device not found" (with boot jumper set to SYS/MEM)
- UART bootloader: timeout
What I tried:
- SWD with HOTPLUG, UR, HWrst, ap=0, freq=100
- DA regression with default key_3_leaf.pem and cert_leaf_chain.b64
- regression.bat from ROT_Provisioning\DA
- DFU via User USB (CN17) with JP4 on USB-PD position
- UART via ST-Link VCP
Setup:
- Board: STM32H573I-DK
- STM32CubeProgrammer: v2.22.0
- ST-Link FW: V3J17M10
- Voltage: 3.31V
Is there any way to recover this board? It seems RSS is not booting, which prevents DA entirely.
Thank you.