diff --git a/debian/changelog b/debian/changelog
index 3ea7fb4e616106210e7e91fd05d65ce72b9fc0f1..206f9c27f48c664ced006101bfa74db7c5fc9a24 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,7 @@
-spark-store (4.3.2.2) UNRELEASED; urgency=medium
+spark-store (4.3.3) UNRELEASED; urgency=medium
 
   * 修复点击更新需要输入密码的问题
+  * 修复安装速度下降的问题
 
  -- shenmo <shenmo@spark-app.store>  Tue, 24 Sep 2024 11:27:08 +0800
 
diff --git a/debian/source/format b/debian/source/format
index 4dd309d90eff342c7f15777d00cac5e0d1b2bc31..9f6742789cd14191dbf0065f875340a67a042086 100644
--- a/debian/source/format
+++ b/debian/source/format
@@ -1 +1 @@
-3.0(native)
\ No newline at end of file
+3.0 (native)
\ No newline at end of file
diff --git a/tool/apt-fast/ss-apt-fast b/tool/apt-fast/ss-apt-fast
index b4de6f4c0c5fca5f33f988367dedc0897d10bf4d..88c88387bd0fa809cb4dff3e9425b52b9ea12bc3 100755
--- a/tool/apt-fast/ss-apt-fast
+++ b/tool/apt-fast/ss-apt-fast
@@ -52,7 +52,7 @@ for argument in "$@"; do
       option="source"
       root=0
       ;;
-    changelog|search|policy)
+    changelog|search|policy|show)
       root=0
       ;;
   esac
diff --git a/tool/ssaudit b/tool/ssaudit
index 634cb7b1e18132ec6de0472719a4e213f82e1806..37ee792786715299d7947463d3f554a2d12eef10 100755
--- a/tool/ssaudit
+++ b/tool/ssaudit
@@ -123,7 +123,7 @@ DEBPATH=$(realpath "$1")
         exit "$try_run_ret"
     fi
 
-    aptss install "$DEBPATH" -yf --reinstall
+    dpkg -i "$DEBPATH" || aptss install "$DEBPATH" -yf --reinstall --allow-downgrades
 
     if [ "$?" = "0" ] && [ "$2" = "--delete-after-install" ]; then
         if dpkg -s "$package_name" >/dev/null 2>&1; then
diff --git a/tool/ssinstall b/tool/ssinstall
index 2f1fcb32e5e7730061dbb2976eb9a9b41e971cde..9ea612042933df7088e80162734d5d031befbf74 100755
--- a/tool/ssinstall
+++ b/tool/ssinstall
@@ -166,7 +166,7 @@ if [ ! -z "$IS_SHA512SUM_CHECKED" ]; then
         exit "$try_run_ret"
     fi
 
-    aptss install "$DEBPATH" -yf --reinstall
+    dpkg -i "$DEBPATH" || aptss install "$DEBPATH" -yf --reinstall --allow-downgrades
 
 unlock_file "$DEBPATH"