diff --git a/.gitignore b/.gitignore
index ac9dd12..5fcc5ec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,11 @@
-# Firmware images & build artifacts
-*.img
+# Build output
 /build/
 
+# Firmware images (allow tracked official stock baselines)
+*.img
+!Ender-3_V3_KE_F005_ota_img_V1.1.0.17.img
+!NEBULA_ota_img_V1.1.0.30.img
+
 # Python cache & temporary files
 __pycache__/
 *.py[cod]
diff --git a/Ender-3_V3_KE_F005_ota_img_V1.1.0.17.img b/Ender-3_V3_KE_F005_ota_img_V1.1.0.17.img
new file mode 100644
index 0000000..009f9bc
Binary files /dev/null and b/Ender-3_V3_KE_F005_ota_img_V1.1.0.17.img differ
diff --git a/NEBULA_ota_img_V1.1.0.30.img b/NEBULA_ota_img_V1.1.0.30.img
new file mode 100644
index 0000000..1e86b2c
Binary files /dev/null and b/NEBULA_ota_img_V1.1.0.30.img differ
diff --git a/README.md b/README.md
index 245d9ac..6b494b8 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,8 @@ For in-depth architectural and developer documentation:
 
 ```
 DarKE/
+├── Ender-3_V3_KE_F005_ota_img_V1.1.0.17.img  # Stock CrealityOS baseline for Ender-3 V3 KE (F005)
+├── NEBULA_ota_img_V1.1.0.30.img              # Stock CrealityOS baseline for Nebula Pad (NEBULA)
 ├── build_openke_image.sh                     # Automated build wrapper script
 ├── README.md                                 # Workspace overview & quickstart
 ├── FIRMWARE_NOTES.md                         # Architecture notes & encryption keys