diff --git a/README.md b/README.md
index 72918af..26a7e05 100644
--- a/README.md
+++ b/README.md
@@ -6,15 +6,33 @@ Bitcode support.
 OpenSSL and Darwin native ssl support.  
   
 Script only, please download libcurl from here: http://curl.haxx.se/download.html  
-Tested Xcode 7.3(7D175) on OSX 10.11.4  
-Tested curl 7.44.0 and 7.47.1 and 7.48.0  
+Tested Xcode 8.1 on macOS 10.12  
+Tested curl 7.52.1
+
+curl-7.52.1 issue
+=================
+7.52.1 is the latest release but have an issue to build with darwinssl
+
+https://github.com/curl/curl/issues/1172
+
+https://github.com/curl/curl/commit/8db3afe16c0916ea5acf6aed6e7cf02f06cc8677
+
+The fix have commited to curl just one day after release, which should be avaliable for the next patch release.
+
+Workaround for this issue is:
+- patch it with the commit (See darwinssl-fix-iOS-build.patch extacted)
+- Or, use openssl with: ```
+../build_libcurl_dist.sh openssl
+```
 
 Usage
 =================
 ```
-curl -O http://curl.haxx.se/download/curl-7.47.1.tar.gz
-tar xf curl-7.47.1.tar.gz
-cd curl-7.47.1
+curl -O http://curl.haxx.se/download/curl-7.52.1.tar.gz
+tar xf curl-7.52.1.tar.gz
+cd curl-7.52.1
+curl -O https://raw.githubusercontent.com/sinofool/build-libcurl-ios/master/darwinssl-fix-iOS-build.patch
+patch -p1 < darwinssl-fix-iOS-build.patch
 curl https://raw.githubusercontent.com/sinofool/build-libcurl-ios/master/build_libcurl_dist.sh |bash
 ......
 ```
@@ -28,8 +46,10 @@ To use OpenSSL, use https://github.com/sinofool/build-openssl-ios/ to build Open
 curl https://raw.githubusercontent.com/sinofool/build-libcurl-ios/master/build_libcurl_dist.sh openssl |bash
 ```
 
-Binary
+Binary (Not updated yet)
 =================
+Following binary is curl-7.47.1, I will release 7.52.1 binaries after a longer test.
+
 You can find a prebuild binary (with OpenSSL) here: https://sinofool.net/dl/libcurl-ios-dist.tar.bz2
 
 Double check the binary file before use:
diff --git a/build_libcurl_dist.sh b/build_libcurl_dist.sh
index 603833b..daf86fb 100755
--- a/build_libcurl_dist.sh
+++ b/build_libcurl_dist.sh
@@ -9,6 +9,13 @@ echo "#include \"include/curl/curlver.h\"
 #if LIBCURL_VERSION_MAJOR < 7 || LIBCURL_VERSION_MINOR < 40
 #error Required curl 7.40.0+; See http://curl.haxx.se/docs/adv_20150108A.html
 #endif"|gcc -c -o /dev/null -xc -||exit 9
+
+echo "#include \"include/curl/curlver.h\"
+#if LIBCURL_VERSION_MAJOR == 7 &&  LIBCURL_VERSION_MINOR <= 52 && LIBCURL_VERSION_PATCH <= 1
+#warning curl 7.52.1 have an issue build with darwinssl; See patch here: https://github.com/curl/curl/commit/8db3afe16c0916ea5acf6aed6e7cf02f06cc8677
+#warning For 7.52.1 is the latest release version, the patch commited just one day later than release cut. I can't automatically apply the patch for you.
+#warning Please patch it with: patch -p1 < darwinssl-fix-iOS-build.patch
+#endif"|gcc -c -o /dev/null -xc -||exit 9
 }
 
 function build_for_arch() {
@@ -18,7 +25,7 @@ function build_for_arch() {
   PREFIX=$4
   IPHONEOS_DEPLOYMENT_TARGET="6.0"
   export PATH="${DEVROOT}/usr/bin/:${PATH}"
-  export CFLAGS="-arch ${ARCH} -pipe -Os -gdwarf-2 -isysroot ${SYSROOT} -miphoneos-version-min=${IPHONEOS_DEPLOYMENT_TARGET} -fembed-bitcode"
+  export CFLAGS="-DCURL_BUILD_IOS -arch ${ARCH} -pipe -Os -gdwarf-2 -isysroot ${SYSROOT} -miphoneos-version-min=${IPHONEOS_DEPLOYMENT_TARGET} -fembed-bitcode"
   export LDFLAGS="-arch ${ARCH} -isysroot ${SYSROOT}"
   ./configure --disable-shared --enable-static --enable-ipv6 ${SSL_FLAG} --host="${HOST}" --prefix=${PREFIX} && make -j8 && make install
 }
@@ -38,21 +45,22 @@ fi
 
 TMP_DIR=/tmp/build_libcurl_$$
 
-build_for_arch i386 i386-apple-darwin /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk ${TMP_DIR}/i386 || exit 1
+#build_for_arch i386 i386-apple-darwin /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk ${TMP_DIR}/i386 || exit 1
 build_for_arch x86_64 x86_64-apple-darwin /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk ${TMP_DIR}/x86_64 || exit 2
 build_for_arch arm64 arm-apple-darwin /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk ${TMP_DIR}/arm64 || exit 3
 build_for_arch armv7s armv7s-apple-darwin /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk ${TMP_DIR}/armv7s || exit 4
-build_for_arch armv7 armv7-apple-darwin /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk ${TMP_DIR}/armv7 || exit 5
+#build_for_arch armv7 armv7-apple-darwin /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk ${TMP_DIR}/armv7 || exit 5
 
 mkdir -p ${TMP_DIR}/lib/
 ${DEVROOT}/usr/bin/lipo \
-	-arch i386 ${TMP_DIR}/i386/lib/libcurl.a \
 	-arch x86_64 ${TMP_DIR}/x86_64/lib/libcurl.a \
-	-arch armv7 ${TMP_DIR}/armv7/lib/libcurl.a \
 	-arch armv7s ${TMP_DIR}/armv7s/lib/libcurl.a \
 	-arch arm64 ${TMP_DIR}/arm64/lib/libcurl.a \
 	-output ${TMP_DIR}/lib/libcurl.a -create
 
+#	-arch armv7 ${TMP_DIR}/armv7/lib/libcurl.a \
+#	-arch i386 ${TMP_DIR}/i386/lib/libcurl.a \
+
 cp -r ${TMP_DIR}/armv7s/include ${TMP_DIR}/
 curl -O https://raw.githubusercontent.com/sinofool/build-libcurl-ios/master/patch-include.patch
 patch ${TMP_DIR}/include/curl/curlbuild.h < patch-include.patch
diff --git a/darwinssl-fix-iOS-build.patch b/darwinssl-fix-iOS-build.patch
new file mode 100644
index 0000000..fa0aac9
--- /dev/null
+++ b/darwinssl-fix-iOS-build.patch
@@ -0,0 +1,30 @@
+From 8db3afe16c0916ea5acf6aed6e7cf02f06cc8677 Mon Sep 17 00:00:00 2001
+From: Chris Araman <chris-araman@users.noreply.github.com>
+Date: Thu, 22 Dec 2016 18:27:17 -0800
+Subject: [PATCH] darwinssl: fix iOS build
+
+Reviewed-by: Nick Zitzmann
+Fixes #1172
+---
+ lib/vtls/darwinssl.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/lib/vtls/darwinssl.c b/lib/vtls/darwinssl.c
+index a43e391..2146b56 100644
+--- a/lib/vtls/darwinssl.c
++++ b/lib/vtls/darwinssl.c
+@@ -936,7 +936,11 @@ static OSStatus CopyIdentityWithLabel(char *label,
+           (SecIdentityRef) CFArrayGetValueAtIndex(keys_list, i);
+         err = SecIdentityCopyCertificate(*out_cert_and_key, &cert);
+         if(err == noErr) {
++#if CURL_BUILD_IOS
++          common_name = SecCertificateCopySubjectSummary(cert);
++#else // CURL_BUILD_MAC_10_7
+           SecCertificateCopyCommonName(cert, &common_name);
++#endif
+           if(CFStringCompare(common_name, label_cf, 0) == kCFCompareEqualTo) {
+             CFRelease(cert);
+             CFRelease(common_name);
+-- 
+2.10.1 (Apple Git-78)
+