Hello Jaouen,

I have a development issue when running TFM download process on the STM32L562.Print a error log"[ERR] Image in the secondary slot is not valid!" when download tfm_s_enc_sign.bin.ALL other 3 bin（tfm_s_sign.bin，tfm_ns_sign.bin，tfm_ns_enc_sign.bin） download success.

I follow the document UM2671 chapter 11.4 Download a new firmware image.

The project is en.stm32cubel5_v1-3-0.zip，file：Projects\STM32L562E-DK\Applications\TFM

Steps to reproduce:

1.run Projects\STM32L562E-DK\Applications\TFM\TFM_SBSFU_Boot\MDK-ARM\regression.bat to init device

2.build TFM_SBSFU_Boot application，TFM_Appli secure application，TFM_Appli non-secure application，Build TFM_Loader application

3.run Projects\STM32L562E-DK\Applications\TFM\TFM_SBSFU_Boot\MDK-ARM\TFM_UPDATE.bat to programing into STM32L5 internal and external Flash memory

4.success to run into app

5.press user button (blue) during board reset, the user enters local loader menu.

6.use ymodem to download tfm_s_enc_sign.bin to secure image

7.reset and then print error log "[ERR] Image in the secondary slot is not valid!"

Reason：

1.hash verify not pass because after decrypt， the image not same with origin image.log as below：

=====================================================

[INF] verify counter 0 1000000 1000000

[INF] counter 0 : ok

[INF] hash256 : 54, cc, 2c, 4c, 97, b5, 55, 68,

[INF] hash256 buf : cd, 76, a3, a1, cb, 1, 4d, bc,

[ERR] Image in the secondary slot is not valid!

======================================================

Does anyone know what I39m doing wrong?

Thanks in advance!