diff --git a/scripts/getdate.sh b/scripts/getdate.sh
index fc10973..4af97ec 100644
--- a/scripts/getdate.sh
+++ b/scripts/getdate.sh
@@ -348,7 +348,15 @@ gen_clash_providers(){ #生成clash的providers配置文件
       url: "https://www.gstatic.com/generate_204"
       interval: 600
 EOF
-}
+		[ "$crashcore" = 'meta' ] && {
+		[ "$skip_cert" = "已开启" ] && skip_cert_verify='skip-cert-verify: true'
+		cat >> $TMPDIR/providers/providers.yaml <<EOF
+    override:
+      udp: true
+      $skip_cert_verify
+EOF
+		}
+	}
 	if [ -z "$(grep "provider_temp_${coretype}" ${CRASHDIR}/configs/ShellCrash.cfg)" ];then
 		provider_temp_file=$(sed -n "1 p" ${CRASHDIR}/configs/${coretype}_providers.list | awk '{print $2}')
 	else
@@ -417,7 +425,7 @@ gen_singbox_providers(){ #生成singbox的providers配置文件
       "healthcheck_interval": "10m",
       "download_url": "${2}",
       "path": "./providers/${1}.yaml",
-      "download_ua": "clash",
+      "download_ua": "clash.meta",
       "download_interval": "24h",
       "download_detour": "DIRECT"
 	},
@@ -1164,6 +1172,8 @@ setcoretype(){ #手动指定内核类型
 switch_core(){ #clash与singbox内核切换
 	#singbox和clash内核切换时提示是否保留文件
 	[ "$core_new" != "$core_old" ] && {
+		[ "$dns_mod" = "redir_host" ] && [ "$core_old" = "clash" ] && setconfig dns_mod mix #singbox自动切换dns
+		[ "$dns_mod" = "mix" ] && [ "$core_old" = "singbox" ] && setconfig dns_mod fake-ip #singbox自动切换dns
 		echo -e "\033[33m已从$core_old内核切换至$core_new内核\033[0m"
 		echo -e "\033[33m二者Geo数据库及yaml/json配置文件不通用\033[0m"
 		read -p "是否保留相关数据库文件？(1/0) > " res
diff --git a/scripts/menu.sh b/scripts/menu.sh
index f5a6b99..f909f81 100644
--- a/scripts/menu.sh
+++ b/scripts/menu.sh
@@ -175,7 +175,12 @@ start_core(){
 		core_config=${CRASHDIR}/yamls/config.yaml
 	fi
 	echo -----------------------------------------------
-	if [ -s $core_config -o -n "$Url" -o -n "$Https" ];then
+	if [ ! -s $core_config -a -s $CRASHDIR/configs/providers.cfg ];then
+		echo -e "\033[33m没有找到${crashcore}配置文件，尝试生成providers配置文件！\033[0m"
+		[ "$crashcore" = singboxp ] && coretype=singbox
+		[ "$crashcore" = meta -o "$crashcore" = clashpre ] && coretype=clash
+		source ${CRASHDIR}/getdate.sh && gen_${coretype}_providers
+	elif [ -s $core_config -o -n "$Url" -o -n "$Https" ];then
 		${CRASHDIR}/start.sh start
 		#设置循环检测以判定服务启动是否成功
 		i=1
@@ -1207,7 +1212,6 @@ normal_set(){ #基础设置
 
 	}
 	set_dns_mod(){
-		[ "$dns_mod" = mix ] && [ "$crashcore" != singbox -o "$crashcore" != singboxp ] && dns_mod=redir_host
 		echo -----------------------------------------------
 		echo -e "当前DNS运行模式为：\033[47;30m $dns_mod \033[0m"
 		echo -e "\033[33m切换模式后需要手动重启服务以生效！\033[0m"
diff --git a/scripts/start.sh b/scripts/start.sh
index ef274f1..98a5841 100644
--- a/scripts/start.sh
+++ b/scripts/start.sh
@@ -1776,8 +1776,10 @@ update_config(){ #更新订阅并重启
 hotupdate(){ #热更新订阅
 		getconfig
 		get_core_config
+		core_check
 		modify_$format && \
 		put_save http://127.0.0.1:${db_port}/configs "{\"path\":\"${CRASHDIR}/config.$format\"}"
+		rm -rf ${TMPDIR}/CrashCore
 }
 set_proxy(){ #设置环境变量
 	getconfig
@@ -1807,10 +1809,12 @@ start)
 		elif [ -f /etc/rc.common -a "$(cat /proc/1/comm)" = "procd" ];then
 			/etc/init.d/shellcrash start 
 		elif [ "$USER" = "root" -a "$(cat /proc/1/comm)" = "systemd" ];then
-			FragmentPath=$(systemctl show -p FragmentPath shellcrash | sed 's/FragmentPath=//')
-			[ -f $FragmentPath ] && setconfig ExecStart "$COMMAND >/dev/null" "$FragmentPath"
-			systemctl daemon-reload
-			systemctl start shellcrash.service || start_error
+			bfstart && {
+				FragmentPath=$(systemctl show -p FragmentPath shellcrash | sed 's/FragmentPath=//')
+				[ -f $FragmentPath ] && setconfig ExecStart "$COMMAND >/dev/null" "$FragmentPath"
+				systemctl daemon-reload
+				systemctl start shellcrash.service || start_error
+			}
 		else
 			bfstart && start_old
 		fi