diff --git a/overlays/README.md b/overlays/README.md
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+
+Edatec overlays downloaded from
+
+https://apt.edatec.cn/raspbian/pool/main/e/
diff --git a/overlays/ed-mcp2515-spi1-can0.dtbo b/overlays/ed-mcp2515-spi1-can0.dtbo
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diff --git a/overlays/ed-sdhost.dtbo b/overlays/ed-sdhost.dtbo
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