ST X-CUBE-SBSFU - File Transfer Completion; Figure 27. SBSFU Reboot after Encrypted Firmware Transfer

Step-by-step execution UM2262
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8.4.3 File transfer completion
After the file transfer is completed, the system forces a reboot as shown in Figure 27.
Figure 27. SBSFU reboot after encrypted firmware transfer
The system status that is printed as shown in Figure 27 consequently provides the following
information:
• There is no firmware to download.
• The firmware is detected as encrypted. The user firmware is decrypted.
• If the decryption is OK, the user firmware is installed.
• If the installation is OK, the user firmware signature is verified.
• If the verification is OK, the user firmware is executed.