From 4cb467fa9ce90c93637995da58c1eed6eadc2cb8 Mon Sep 17 00:00:00 2001
From: aiminick <83101338@qq.com>
Date: Mon, 11 Feb 2019 01:39:51 +0800
Subject: [PATCH] Update upgrade.md

---
 upgrade.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/upgrade.md b/upgrade.md
index 2d0934a..cb4bf76 100644
--- a/upgrade.md
+++ b/upgrade.md
@@ -31,7 +31,7 @@ apt update ; apt install tar gzip zip unzip bzip2 xz-utils -y
 
 > 如：***upkg-201X-0X-XX-v201X-1.X-uX.zip***
 
-* 上传到你的树莓派系统，解压这个升级包
+* 上传到你的树莓派系统，**切换至root用户**并解压这个升级包
 
 ```shell
 unzip upkg-201X-0X-XX-v201X-1.X-uX.zip