diff --git a/Makefile b/Makefile
index 32433051..2e480efb 100644
--- a/Makefile
+++ b/Makefile
@@ -50,8 +50,8 @@ tips:
 preparation:
 # As SDK build needs to clone and patch openmp, we cannot support the mode that download the source from github as zip.
 # Only enable the download from git
-	git submodule update --init --recursive
-	./external/dcap_source/QuoteVerification/prepare_sgxssl.sh nobuild
+	# git submodule update --init --recursive
+	# ./external/dcap_source/QuoteVerification/prepare_sgxssl.sh nobuild
 	cd external/openmp/openmp_code && git apply ../0001-Enable-OpenMP-in-SGX.patch >/dev/null 2>&1 ||  git apply ../0001-Enable-OpenMP-in-SGX.patch --check -R
 	cd external/protobuf/protobuf_code && git apply ../sgx_protobuf.patch >/dev/null 2>&1 ||  git apply ../sgx_protobuf.patch --check -R
 	./external/sgx-emm/create_symlink.sh
@@ -59,8 +59,8 @@ preparation:
 	cd external/cbor && cp -r libcbor sgx_libcbor
 	cd external/cbor/libcbor && git apply ../raw_cbor.patch >/dev/null 2>&1 || git apply ../raw_cbor.patch --check -R
 	cd external/cbor/sgx_libcbor && git apply ../sgx_cbor.patch >/dev/null 2>&1 || git apply ../sgx_cbor.patch --check -R
-	./download_prebuilt.sh
-	./external/dcap_source/QuoteGeneration/download_prebuilt.sh
+	# ./download_prebuilt.sh
+	# ./external/dcap_source/QuoteGeneration/download_prebuilt.sh
 
 psw:
 	$(MAKE) -C psw/ USE_OPT_LIBS=$(USE_OPT_LIBS)