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SBSFU - Improve boot time not working

STsch.1
Associate III

Hi,

When I have a look at the AN5056(https://www.st.com/resource/en/application_note/dm00414677-integration-guide-for-the-xcubesbsfu-stm32cube-expansion-package-stmicroelectronics.pdf), there is a possibility on page 39 to improve the boot time. That is exactly what I want to achieve, but it seems, the code of the SBSFU changed over time and it looks not anymore as in the AN5056:

0693W00000HrGTdQAN.pngNow in the sfu_boot.c, there is much more code available and if I try to comment out as in the AN5056, I always get a critical handle failure:

0693W00000HrGZBQA3.png 

How is it possible to improve the SBSFU boot time in the newest version?

2 REPLIES 2
Bubbles
ST Employee

Hi @STsch.1​ ,

failing signature may mean that something is not generated with up-to date code. When making a change in the code, especially with all the security already enabled, you may need to rebuild everything, starting with the SEcore.

BR,

J

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

STsch.1
Associate III

Ok, it was indeed my mistake, I commented out too much code. Thank you.