diff --git a/edxp-core/template_override/customize.sh b/edxp-core/template_override/customize.sh
index 8e1e9d81..cbc70927 100644
--- a/edxp-core/template_override/customize.sh
+++ b/edxp-core/template_override/customize.sh
@@ -33,6 +33,9 @@ RIRU_EDXP="$(getRandomNameExist 4 "libriru_" ".so" "
 RIRU_MODULES="${RIRU_PATH}/modules"
 RIRU_TARGET="${RIRU_MODULES}/${RIRU_EDXP}"
 
+IS_MAGISK_LITE=false
+[[ "${MAGISK_VER:0-5}" == "-lite" ]] && IS_MAGISK_LITE=true
+
 VERSION=$(grep_prop version "${TMPDIR}/module.prop")
 RIRU_MIN_API_VERSION=$(grep_prop api "${TMPDIR}/module.prop")
 
@@ -95,6 +98,9 @@ LANG_UTIL_ERR_ANDROID_UNSUPPORT_1="Unsupported Android version"
 LANG_UTIL_ERR_ANDROID_UNSUPPORT_2="(below Oreo)"
 LANG_UTIL_ERR_ANDROID_UNSUPPORT_3="Learn more from our GitHub Wiki"
 LANG_UTIL_ERR_PLATFORM_UNSUPPORT="Unsupported platform"
+LANG_UTIL_ERR_DUPINST_1="Duplicate installation is now allowed"
+LANG_UTIL_ERR_DUPINST_2="Remove"
+LANG_UTIL_ERR_DUPINST_3="and reboot to install again"
 
 # Load lang
 if [[ ${BOOTMODE} == true ]]; then
@@ -157,14 +163,14 @@ if [ "$ARCH" = "x86" ] || [ "$ARCH" = "x64" ]; then
 else
   ui_print "- ${LANG_CUST_INST_EXT_LIB_ARM}"
   extract "$ZIPFILE" 'system/lib/libriru_edxp.so' "${MODPATH}"
-  if [[ "${VARIANTS}" == "SandHook" ]]; then
+  if [[ "${VARIANT}" == "SandHook" ]]; then
     extract "$ZIPFILE" 'system/lib/libsandhook.edxp.so' "${MODPATH}"
   fi
 
   if [ "$IS64BIT" = true ]; then
     ui_print "- ${LANG_CUST_INST_EXT_LIB_ARM64}"
     extract "$ZIPFILE" 'system/lib64/libriru_edxp.so' "${MODPATH}"
-    if [[ "${VARIANTS}" == "SandHook" ]]; then
+    if [[ "${VARIANT}" == "SandHook" ]]; then
      extract "$ZIPFILE" 'system/lib64/libsandhook.edxp.so' "${MODPATH}"
     fi
   fi
@@ -214,7 +220,7 @@ ui_print "- ${LANG_CUST_INST_COPY_LIB}"
 rm -rf "/data/misc/$MISC_PATH/framework"
 mv "${MODPATH}/system/framework" "/data/misc/$MISC_PATH/framework"
 
-if [[ "${VARIANTS}" == "SandHook" ]]; then
+if [[ "${VARIANT}" == "SandHook" ]]; then
   mkdir -p "/data/misc/$MISC_PATH/framework/lib"
   mv "${MODPATH}/system/lib/libsandhook.edxp.so" "/data/misc/$MISC_PATH/framework/lib/libsandhook.edxp.so"
   if [ "$IS64BIT" = true ]; then
diff --git a/edxp-core/template_override/util_functions.sh b/edxp-core/template_override/util_functions.sh
index 23ae2534..1143e4e9 100644
--- a/edxp-core/template_override/util_functions.sh
+++ b/edxp-core/template_override/util_functions.sh
@@ -42,6 +42,13 @@ require_yahfa() {
     abortC   "${POUNDS}"
 }
 
+duplicate_installation() {
+    ui_print "${POUNDS}"
+    ui_print "! ${LANG_UTIL_ERR_DUPINST_1}"
+    ui_print "! ${LANG_UTIL_ERR_DUPINST_2} ${1} ${LANG_UTIL_ERR_DUPINST_3}"
+    abortC   "${POUNDS}"
+}
+
 require_new_android() {
     ui_print "${POUNDS}"
     ui_print "! ${LANG_UTIL_ERR_ANDROID_UNSUPPORT_1} ${1} ${LANG_UTIL_ERR_ANDROID_UNSUPPORT_2}"
@@ -52,16 +59,22 @@ require_new_android() {
 
 edxp_check_architecture() {
     if [[ "${MODID}" == "riru_edxposed_sandhook" ]]; then
-        VARIANTS="SandHook"
+        VARIANT="SandHook"
+        if [[ "${IS_MAGISK_LITE}" == "false" && -d "${MODPATH}/../../modules/riru_edxposed" || -d "${MODPATH}/../../modules_update/riru_edxposed" ]] || [[ "${IS_MAGISK_LITE}" == "true" && -d "${MODPATH}/../../lite_modules/riru_edxposed" || -d "${MODPATH}/../../lite_modules_update/riru_edxposed" ]]; then
+            duplicate_installation "EdXposed (YAHFA)"
+        fi
     else
-        VARIANTS="YAHFA"
+        VARIANT="YAHFA"
+        if [[ "${IS_MAGISK_LITE}" == "false" && -d "${MODPATH}/../../modules/riru_edxposed_sandhook" || -d "${MODPATH}/../../modules_update/riru_edxposed_sandhook" ]] || [[ "${IS_MAGISK_LITE}" == "true" && -d "${MODPATH}/../../lite_modules/riru_edxposed_sandhook" || -d "${MODPATH}/../../lite_modules_update/riru_edxposed_sandhook" ]]; then
+            duplicate_installation "EdXposed (SandHook)"
+        fi
     fi
     if [[ "${ARCH}" != "arm" && "${ARCH}" != "arm64" && "${ARCH}" != "x86" && "${ARCH}" != "x64" ]]; then
         abortC "! ${LANG_UTIL_ERR_PLATFORM_UNSUPPORT}: ${ARCH}"
     else
         ui_print "- ${LANG_UTIL_PLATFORM}: ${ARCH}"
         if [[ "${ARCH}" == "x86" || "${ARCH}" == "x64" ]]; then
-            if [[ "${VARIANTS}" == "SandHook" ]]; then
+            if [[ "${VARIANT}" == "SandHook" ]]; then
                 require_yahfa
             fi
         fi
diff --git a/edxp-core/template_override/zh_CN.sh b/edxp-core/template_override/zh_CN.sh
index 43dce51f..afd2a5fe 100644
--- a/edxp-core/template_override/zh_CN.sh
+++ b/edxp-core/template_override/zh_CN.sh
@@ -51,3 +51,6 @@ LANG_UTIL_ERR_ANDROID_UNSUPPORT_1="不支持的 Android 版本"
 LANG_UTIL_ERR_ANDROID_UNSUPPORT_2="(Oreo 以下版本)"
 LANG_UTIL_ERR_ANDROID_UNSUPPORT_3="从我们的 GitHub Wiki 中了解更多"
 LANG_UTIL_ERR_PLATFORM_UNSUPPORT="不支持的设备平台"
+LANG_UTIL_ERR_DUPINST_1="不允许重复安装"
+LANG_UTIL_ERR_DUPINST_2="删除"
+LANG_UTIL_ERR_DUPINST_3="并重启以继续安装"