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-rw-r--r--doc/uImage.FIT/signature.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/uImage.FIT/signature.txt b/doc/uImage.FIT/signature.txt
index 9502037705..672dc3536f 100644
--- a/doc/uImage.FIT/signature.txt
+++ b/doc/uImage.FIT/signature.txt
@@ -328,6 +328,9 @@ be enabled:
CONFIG_FIT_SIGNATURE - enable signing and verfication in FITs
CONFIG_RSA - enable RSA algorithm for signing
+WARNING: When relying on signed FIT images with required signature check
+the legacy image format is default disabled by not defining
+CONFIG_IMAGE_FORMAT_LEGACY
Testing
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