diff --git a/doc/image/EVB_AIoT_guide/EVB_AIoT.jpg b/doc/image/EVB_AIoT_guide/EVB_AIoT.jpg
index dd067f84..811642fc 100644
Binary files a/doc/image/EVB_AIoT_guide/EVB_AIoT.jpg and b/doc/image/EVB_AIoT_guide/EVB_AIoT.jpg differ
diff --git a/doc/image/EVB_AIoT_guide/cloud_000.png b/doc/image/EVB_AIoT_guide/cloud_000.png
index 888b1979..5ac83c54 100644
Binary files a/doc/image/EVB_AIoT_guide/cloud_000.png and b/doc/image/EVB_AIoT_guide/cloud_000.png differ