diff --git a/SOURCES/Makefile b/SOURCES/Makefile
index f3dad78..978de29 100644
--- a/SOURCES/Makefile
+++ b/SOURCES/Makefile
@@ -112,7 +112,9 @@ install: filesystem build
 	install -m 644 $(RELEASEDIR)/main/lib/*                                    $(SCRIPTLIBDIR)
 	
 	install -m 644 $(RELEASEDIR)/main/systemd/$(NAME)@.service                 $(UNITDIR)
+	install -m 644 $(RELEASEDIR)/main/systemd/$(NAME)-orig@.service            $(UNITDIR)
 	install -m 644 $(RELEASEDIR)/main/systemd/$(NAME)-beta@.service            $(UNITDIR)
+	install -m 644 $(RELEASEDIR)/main/systemd/$(NAME)-beta-orig@.service       $(UNITDIR)
 	install -m 644 $(RELEASEDIR)/main/systemd/$(NAME)-beta-update.service      $(UNITDIR)
 	install -m 644 $(RELEASEDIR)/main/systemd/$(NAME)-beta-update.timer        $(UNITDIR)
 	install -m 644 $(RELEASEDIR)/main/systemd/$(NAME)-update.service           $(UNITDIR)
@@ -135,7 +137,9 @@ uninstall:
 	rm -f  $(BINDIR)/$(NAME)-beta
 	
 	rm -f  $(UNITDIR)/$(NAME)@.service
+	rm -f  $(UNITDIR)/$(NAME)-orig@.service
 	rm -f  $(UNITDIR)/$(NAME)-beta@.service
+	rm -f  $(UNITDIR)/$(NAME)-beta-orig@.service
 	rm -f  $(UNITDIR)/$(NAME)-beta-update.service
 	rm -f  $(UNITDIR)/$(NAME)-beta-update.timer
 	rm -f  $(UNITDIR)/$(NAME)-update.service
@@ -154,7 +158,9 @@ test: fake-systemd-build
 	$(XMLCHECK)       $(RELEASEDIR)/main/firewalld/$(NAME).xml
 	
 	$(SYSTEMDCHECK)   $(RELEASEDIR)/main/systemd/$(NAME)@.service
+	$(SYSTEMDCHECK)   $(RELEASEDIR)/main/systemd/$(NAME)-orig@.service
 	$(SYSTEMDCHECK)   $(RELEASEDIR)/main/systemd/$(NAME)-beta@.service
+	$(SYSTEMDCHECK)   $(RELEASEDIR)/main/systemd/$(NAME)-beta-orig@.service
 	$(SYSTEMDCHECK)   $(RELEASEDIR)/main/systemd/$(NAME)-beta-update.service
 	$(SYSTEMDCHECK)   $(RELEASEDIR)/main/systemd/$(NAME)-beta-update.timer
 	$(SYSTEMDCHECK)   $(RELEASEDIR)/main/systemd/$(NAME)-update.service
diff --git a/SOURCES/main/kf2-srv b/SOURCES/main/kf2-srv
index 2dc5546..3b858cc 100755
--- a/SOURCES/main/kf2-srv
+++ b/SOURCES/main/kf2-srv
@@ -29,6 +29,7 @@ readonly PatchDir=":DEFINE_PREFIX:/share/kf2-srv/patch"
 
 readonly InstallDir=":DEFINE_PREFIX:/games/kf2-srv${KF2POSTFIX}"
 readonly AppBin="$InstallDir/Binaries/Win64/KFGameSteamServer.bin.x86_64"
+readonly AppBinOrig="${AppBin}.orig"
 
 readonly DefaultConfigDir="$InstallDir/KFGame/Config"
 readonly DefaultDownloadDir="$InstallDir/Binaries/Win64/steamapps/workshop"
diff --git a/SOURCES/main/lib/game.lib b/SOURCES/main/lib/game.lib
index 6021bc8..5b0ea39 100644
--- a/SOURCES/main/lib/game.lib
+++ b/SOURCES/main/lib/game.lib
@@ -281,7 +281,7 @@ function make_default_instance () # $1: Dir
 function apply_patch ()
 {
 	if [[ -x "$PatchDir/kf2-ranked-patch" ]]; then
-		"$PatchDir/kf2-ranked-patch" "$AppBin"
+		"$PatchDir/kf2-ranked-patch" "$AppBin" "$AppBinOrig"
 	fi
 }
 
diff --git a/SOURCES/main/lib/instance.lib b/SOURCES/main/lib/instance.lib
index 9f0d947..9ac340d 100644
--- a/SOURCES/main/lib/instance.lib
+++ b/SOURCES/main/lib/instance.lib
@@ -45,6 +45,21 @@ function service_name () # $*: Instance[s]
 	local Services=""
 	for Instance in $*
 	do
+		if multini -g "$InstanceConfigDir/$Instance" '' "UseOrigApp" 2> /dev/null | grep -Piqo '^True$' && test -x "$AppBinOrig"
+			Services+=" kf2-srv${KF2POSTFIX}-orig@$Instance.service"
+		else
+			Services+=" kf2-srv${KF2POSTFIX}@$Instance.service"
+		fi
+	done
+	echo "$Services"
+}
+
+function service_names () # $*: Instance[s]
+{
+	local Services=""
+	for Instance in $*
+	do
+		Services+=" kf2-srv${KF2POSTFIX}-orig@$Instance.service"
 		Services+=" kf2-srv${KF2POSTFIX}@$Instance.service"
 	done
 	echo "$Services"
@@ -212,7 +227,7 @@ function instance_disable () # $*: [InstanceName[s]]
 	done
 	
 	if [[ -n "$ToDisableInstanceList" ]]; then
-		systemctl disable $(service_name "$ToDisableInstanceList")
+		systemctl disable $(service_names "$ToDisableInstanceList")
 	else
 		echo "Nothing to do"
 	fi
@@ -409,7 +424,7 @@ function instance_stop () # $*: [InstanceName[s]]
 	done
 	
 	if [[ -n "$ToStopInstanceList" ]]; then
-		systemctl stop $(service_name "$ToStopInstanceList")
+		systemctl stop $(service_names "$ToStopInstanceList")
 	else
 		echo "Nothing to do"
 	fi
diff --git a/SOURCES/main/systemd/kf2-srv-beta-orig@.service b/SOURCES/main/systemd/kf2-srv-beta-orig@.service
new file mode 100644
index 0000000..72078a9
--- /dev/null
+++ b/SOURCES/main/systemd/kf2-srv-beta-orig@.service
@@ -0,0 +1,25 @@
+[Unit]
+Description=Killing Floor 2 Beta Server Daemon - %i
+Conflicts=kf2-srv-beta@%i.service
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+User=steam
+Group=steam
+Type=simple
+StandardOutput=syslog
+StandardError=syslog
+SyslogIdentifier=kf2-srv-beta/%i
+EnvironmentFile=/etc/kf2-srv/instances-beta/%i/instance.conf
+ExecStart=:DEFINE_PREFIX:/games/kf2-srv-beta/Binaries/Win64/KFGameSteamServer.bin.x86_64.orig ${Map}?Difficulty=${Difficulty}?GameLength=${Length}?Game=${Game}?Mutator=${Mutators}?${Args} configsubdir=instances/%i -webadminport=${PortWeb} -queryport=${PortQuery} -port=${PortGame}
+Restart=on-failure
+
+NoNewPrivileges=yes
+PrivateTmp=true
+PrivateDevices=true
+ProtectHome=true
+ProtectSystem=false
+
+[Install]
+WantedBy=multi-user.target
diff --git a/SOURCES/main/systemd/kf2-srv-beta@.service b/SOURCES/main/systemd/kf2-srv-beta@.service
index 6f9d1c2..cc50e6e 100644
--- a/SOURCES/main/systemd/kf2-srv-beta@.service
+++ b/SOURCES/main/systemd/kf2-srv-beta@.service
@@ -1,5 +1,6 @@
 [Unit]
 Description=Killing Floor 2 Beta Server Daemon - %i
+Conflicts=kf2-srv-beta-orig@%i.service
 After=network-online.target
 Wants=network-online.target
 
diff --git a/SOURCES/main/systemd/kf2-srv-orig@.service b/SOURCES/main/systemd/kf2-srv-orig@.service
new file mode 100644
index 0000000..b5aa763
--- /dev/null
+++ b/SOURCES/main/systemd/kf2-srv-orig@.service
@@ -0,0 +1,25 @@
+[Unit]
+Description=Killing Floor 2 Server Daemon - %i
+Conflicts=kf2-srv@%i.service
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+User=steam
+Group=steam
+Type=simple
+StandardOutput=syslog
+StandardError=syslog
+SyslogIdentifier=kf2-srv/%i
+EnvironmentFile=/etc/kf2-srv/instances/%i/instance.conf
+ExecStart=:DEFINE_PREFIX:/games/kf2-srv/Binaries/Win64/KFGameSteamServer.bin.x86_64.orig ${Map}?Difficulty=${Difficulty}?GameLength=${Length}?Game=${Game}?Mutator=${Mutators}?${Args} configsubdir=instances/%i -webadminport=${PortWeb} -queryport=${PortQuery} -port=${PortGame}
+Restart=on-failure
+
+NoNewPrivileges=yes
+PrivateTmp=true
+PrivateDevices=true
+ProtectHome=true
+ProtectSystem=false
+
+[Install]
+WantedBy=multi-user.target
diff --git a/SOURCES/main/systemd/kf2-srv@.service b/SOURCES/main/systemd/kf2-srv@.service
index 22f030d..c4bc691 100644
--- a/SOURCES/main/systemd/kf2-srv@.service
+++ b/SOURCES/main/systemd/kf2-srv@.service
@@ -1,5 +1,6 @@
 [Unit]
 Description=Killing Floor 2 Server Daemon - %i
+Conflicts=kf2-srv-orig@%i.service
 After=network-online.target
 Wants=network-online.target