diff --git a/install-dat-release.sh b/install-dat-release.sh
index a537cf8..35955f7 100644
--- a/install-dat-release.sh
+++ b/install-dat-release.sh
@@ -13,6 +13,8 @@
 
 # 0 0 * * * /usr/local/bin/install-dat-release > /dev/null 2>&1
 
+alias curl='"curl" --retry 5 --retry-delay 10 --retry-max-time 60 --false-start --http2 --tlsv1.2 -L'
+
 # You can modify it to /usr/local/lib/v2ray
 V2RAY="/usr/local/share/v2ray"
 DOWNLOAD_LINK_GEOIP="https://github.com/v2fly/geoip/releases/latest/download/geoip.dat"
@@ -31,11 +33,11 @@ check_if_running_as_root() {
 }
 
 download_files() {
-  if ! curl -L -H 'Cache-Control: no-cache' -o "${dir_tmp}/${2}" "${1}"; then
+  if ! curl -R -H 'Cache-Control: no-cache' -o "${dir_tmp}/${2}" "${1}"; then
     echo 'error: Download failed! Please check your network or try again.'
     exit 1
   fi
-  if ! curl -L -H 'Cache-Control: no-cache' -o "${dir_tmp}/${2}.sha256sum" "${1}.sha256sum"; then
+  if ! curl -R -H 'Cache-Control: no-cache' -o "${dir_tmp}/${2}.sha256sum" "${1}.sha256sum"; then
     echo 'error: Download failed! Please check your network or try again.'
     exit 1
   fi
diff --git a/install-release.sh b/install-release.sh
index 84463ef..d8e3419 100644
--- a/install-release.sh
+++ b/install-release.sh
@@ -27,6 +27,8 @@ red=$(tput setaf 1)
 green=$(tput setaf 2)
 reset=$(tput sgr0)
 
+alias curl='"curl" --retry 5 --retry-delay 10 --retry-max-time 60 --false-start --http2 --tlsv1.2 -L'
+
 check_if_running_as_root() {
   # If you want to run as another user, please modify $UID to be owned by this user
   if [[ "$UID" -ne '0' ]]; then
@@ -170,7 +172,7 @@ judgment_parameters() {
 
 install_software() {
   COMPONENT="$1"
-  command -v "$COMPONENT" >/dev/null 2>&1 && return
+  command -v "$COMPONENT" > /dev/null 2>&1 && return
   if ${PACKAGE_MANAGEMENT_INSTALL} "$COMPONENT"; then
     echo "info: $COMPONENT is installed."
   else
@@ -211,7 +213,7 @@ get_version() {
   TMP_FILE="$(mktemp)"
   install_software curl
   # DO NOT QUOTE THESE `${PROXY}` VARIABLES!
-  if ! "curl" ${PROXY} -sSL -H "Accept: application/vnd.github.v3+json" -o "$TMP_FILE" 'https://api.github.com/repos/v2fly/v2ray-core/releases/latest'; then
+  if ! curl ${PROXY} -sS -H "Accept: application/vnd.github.v3+json" -o "$TMP_FILE" 'https://api.github.com/repos/v2fly/v2ray-core/releases/latest'; then
     "rm" "$TMP_FILE"
     echo 'error: Failed to get release list, please check your network.'
     exit 1
@@ -254,12 +256,12 @@ get_version() {
 download_v2ray() {
   DOWNLOAD_LINK="https://github.com/v2fly/v2ray-core/releases/download/$RELEASE_VERSION/v2ray-linux-$MACHINE.zip"
   echo "Downloading V2Ray archive: $DOWNLOAD_LINK"
-  if ! "curl" ${PROXY} -sSLR -H "Accept: application/vnd.github.v3+json" -H 'Cache-Control: no-cache' -o "$ZIP_FILE" "$DOWNLOAD_LINK"; then
+  if ! curl ${PROXY} -R -H 'Cache-Control: no-cache' -o "$ZIP_FILE" "$DOWNLOAD_LINK"; then
     echo 'error: Download failed! Please check your network or try again.'
     return 1
   fi
   echo "Downloading verification file for V2Ray archive: $DOWNLOAD_LINK.dgst"
-  if ! "curl" ${PROXY} -L -H 'Cache-Control: no-cache' -o "$ZIP_FILE.dgst" "$DOWNLOAD_LINK.dgst"; then
+  if ! curl ${PROXY} -sSR -H 'Cache-Control: no-cache' -o "$ZIP_FILE.dgst" "$DOWNLOAD_LINK.dgst"; then
     echo 'error: Download failed! Please check your network or try again.'
     return 1
   fi
@@ -312,7 +314,7 @@ install_v2ray() {
   # Install V2Ray configuration file to $JSON_PATH
   if [[ -z "$JSONS_PATH" ]] && [[ ! -d "$JSON_PATH" ]]; then
     install -d "$JSON_PATH"
-    echo "{}" >"${JSON_PATH}/config.json"
+    echo "{}" > "${JSON_PATH}/config.json"
     CONFIG_NEW='1'
   fi