STM32H747 OTA Issue: Bootloader Not Rebooting After OTA Apply

[pjk]

Dear ST Community Team,

I am working on an STM32H747 project with a custom bootloader and OTA update mechanism. The OTA download completes successfully, metadata is written, and CRC verification passes. However, after the OTA apply step, the device does not reboot into the new firmware. The system continues running the old application, and I never see the expected reboot message from the bootloader.

Details:

• Device: STM32H7 series

• Bootloader checks metadata at 0x081E0000

• Staging slot at 0x08100000, App slot at 0x08020000

• OTA side writes metadata fields (magic, version, staging base, app base, slot size, image size, CRC)

• Logs show: "Download OK" and "Applying..." but no reboot occurs