with the following command
<ul>
<li><em>STM32_SigningTool_CLI.exe -bin USBPD_SRC_UX_Host_MSC.bin -nk -of
0x80000000 -t fsbl -o USBPD_SRC_UX_Host_MSC-trusted.bin -hv 2.3 -dump
USBPD_SRC_UX_Host_MSC-trusted.bin</em></li>
<li>The resulting binary is USBPD_SRC_UX_Host_MSC-trusted.bin.</li>
</ul></li>
<li>Next, in resorting again to CubeProgrammer, load the binary and its
header (USBPD_SRC_UX_Host_MSC-trusted.bin) in DK board external Flash at
address 0x7000’0000.</li>
<li>Set the boot mode in boot from extern