diff --git a/src-tauri/packages/linux/post-install.sh b/src-tauri/packages/linux/post-install.sh
index 45e01d6a9..0a4918a8f 100644
--- a/src-tauri/packages/linux/post-install.sh
+++ b/src-tauri/packages/linux/post-install.sh
@@ -7,8 +7,6 @@ SERVICE_UNIT="clash-verge-service.service"
 SERVICE_UNIT_FILE="/etc/systemd/system/$SERVICE_UNIT"
 # Read by the app, which offers a reinstall when the package could not keep the Service.
 UPGRADE_MARKER="/run/clash-verge-service-upgrade"
-# Written by the preinst for this transaction only.
-UPGRADE_EVIDENCE="/run/clash-verge-service-upgrade-evidence"
 
 write_upgrade_marker() {
     (umask 022 && printf 'gid=%s\nid=%s\n' "$1" "$(date +%s%N)" >"$UPGRADE_MARKER")
@@ -52,32 +50,16 @@ reinstall_existing_service() {
 
 # Upgrades keep an existing Service current; first installs and explicit removals never add one.
 # A symlinked unit is masked or managed by the administrator and is left alone.
-if [ "$1" = "configure" ] && [ -n "$2" ] && [ -d /run/systemd/system ]; then
-    if [ -f "$SERVICE_UNIT_FILE" ] && [ ! -L "$SERVICE_UNIT_FILE" ]; then
-        gid="$(existing_service_gid)"
-        if [ -z "$gid" ]; then
-            echo "Warning: the Clash Verge Service group could not be resolved; Clash Verge will offer to reinstall the Service." >&2
-            write_upgrade_marker ""
-        elif reinstall_existing_service "$gid"; then
-            rm -f "$UPGRADE_MARKER"
-        else
-            write_upgrade_marker "$gid"
-        fi
-    elif [ -f "$UPGRADE_EVIDENCE" ]; then
-        evidence="$(cat "$UPGRADE_EVIDENCE")"
-        rm -f "$UPGRADE_EVIDENCE"
-        gid="$(printf '%s\n' "$evidence" | sed -n 's/^gid=//p')"
-        if [ "$(printf '%s\n' "$evidence" | sed -n 's/^old=//p')" != "$2" ]; then
-            echo "Warning: ignoring Clash Verge Service evidence from another upgrade." >&2
-        elif [ -z "$gid" ]; then
-            echo "Warning: the previous package removed Clash Verge Service and its group is unknown; Clash Verge will offer to reinstall it." >&2
-            write_upgrade_marker ""
-        elif CLASH_VERGE_SERVICE_GID="$gid" /usr/bin/clash-verge-service-install --install-service; then
-            rm -f "$UPGRADE_MARKER"
-        else
-            echo "Warning: reinstalling Clash Verge Service failed; Clash Verge will offer to reinstall it." >&2
-            write_upgrade_marker "$gid"
-        fi
+if [ "$1" = "configure" ] && [ -n "$2" ] && [ -d /run/systemd/system ] &&
+    [ -f "$SERVICE_UNIT_FILE" ] && [ ! -L "$SERVICE_UNIT_FILE" ]; then
+    gid="$(existing_service_gid)"
+    if [ -z "$gid" ]; then
+        echo "Warning: the Clash Verge Service group could not be resolved; Clash Verge will offer to reinstall the Service." >&2
+        write_upgrade_marker ""
+    elif reinstall_existing_service "$gid"; then
+        rm -f "$UPGRADE_MARKER"
+    else
+        write_upgrade_marker "$gid"
     fi
 fi
 
diff --git a/src-tauri/packages/linux/pre-install.sh b/src-tauri/packages/linux/pre-install.sh
deleted file mode 100644
index 74567eecd..000000000
--- a/src-tauri/packages/linux/pre-install.sh
+++ /dev/null
@@ -1,49 +0,0 @@
-#!/bin/bash
-# Previous packages' prerm uninstalls the Service before this script runs, deleting the unit that names
-# its group. The journal still shows whether this dpkg run stopped a running Service and which group that
-# invocation ran with; the postinst reinstalls only from that evidence.
-SERVICE_UNIT="clash-verge-service.service"
-UPGRADE_EVIDENCE="/run/clash-verge-service-upgrade-evidence"
-# systemd's "unit stopped" catalog entry; restart jobs share it, so JOB_TYPE is required too.
-UNIT_STOPPED_MESSAGE_ID="9d1aaa27d60140bd96365438aad20286"
-
-dpkg_start_epoch() {
-    local stat start btime ticks
-    read -r stat <"/proc/$PPID/stat" || return 1
-    start="$(printf '%s\n' "${stat##*) }" | cut -d' ' -f20)"
-    btime="$(sed -n 's/^btime //p' /proc/stat)"
-    ticks="$(getconf CLK_TCK)"
-    [ -n "$start" ] && [ -n "$btime" ] && [ -n "$ticks" ] || return 1
-    echo $((btime + start / ticks))
-}
-
-# Only a prerm that uninstalls on every invocation explains a missing unit during an upgrade.
-old_prerm_uninstalls() {
-    local prerm="${DPKG_ADMINDIR:-/var/lib/dpkg}/info/$DPKG_MAINTSCRIPT_PACKAGE.prerm"
-    [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ] && [ -f "$prerm" ] &&
-        grep -qx '/usr/bin/clash-verge-service-uninstall' "$prerm" && ! grep -q 'upgrade' "$prerm"
-}
-
-rm -f "$UPGRADE_EVIDENCE"
-if [ "$1" = "upgrade" ] && [ -n "$2" ] && [ ! -e "/etc/systemd/system/$SERVICE_UNIT" ] &&
-    [ -d /run/systemd/system ] && [ "$(cat "/proc/$PPID/comm" 2>/dev/null)" = "dpkg" ] &&
-    command -v journalctl >/dev/null && old_prerm_uninstalls; then
-    since="$(dpkg_start_epoch)"
-    invocation=""
-    if [ -n "$since" ]; then
-        invocation="$(journalctl -q --no-pager --since "@$since" _PID=1 UNIT="$SERVICE_UNIT" \
-            MESSAGE_ID="$UNIT_STOPPED_MESSAGE_ID" JOB_TYPE=stop JOB_RESULT=done -n 1 -o export 2>/dev/null |
-            sed -n 's/^INVOCATION_ID=//p')"
-    fi
-    if printf '%s' "$invocation" | grep -qx '[0-9a-f]\{32\}'; then
-        # Stdout entries carry the credentials systemd connected the stream with, which are the unit's Group=.
-        gid="$(journalctl -q --no-pager _SYSTEMD_INVOCATION_ID="$invocation" _SYSTEMD_UNIT="$SERVICE_UNIT" \
-            _TRANSPORT=stdout -n 1 -o export 2>/dev/null | sed -n 's/^_GID=//p')"
-        if [ -z "$gid" ] || [ "$gid" = "0" ] || ! getent group "$gid" >/dev/null; then
-            gid=""
-        fi
-        echo "Clash Verge Service invocation $invocation was removed by the previous package; it will be reinstalled."
-        (umask 022 && printf 'old=%s\ngid=%s\n' "$2" "$gid" >"$UPGRADE_EVIDENCE")
-    fi
-fi
-exit 0
diff --git a/src-tauri/tauri.linux.conf.json b/src-tauri/tauri.linux.conf.json
index d6a16e6ec..166faf26b 100644
--- a/src-tauri/tauri.linux.conf.json
+++ b/src-tauri/tauri.linux.conf.json
@@ -10,7 +10,6 @@
         "provides": ["clash-verge"],
         "conflicts": ["clash-verge"],
         "replaces": ["clash-verge"],
-        "preInstallScript": "./packages/linux/pre-install.sh",
         "postInstallScript": "./packages/linux/post-install.sh",
         "preRemoveScript": "./packages/linux/pre-remove.sh"
       },