diff --git a/docs/tutorial-basics/s805.md b/docs/tutorial-basics/s805.md
index 5c5c4c8..eea00df 100644
--- a/docs/tutorial-basics/s805.md
+++ b/docs/tutorial-basics/s805.md
@@ -44,7 +44,9 @@ USB 镜像烧写工具: [balenaEtcher.exe](https://alist.ecoo.top/d/s805/balenaE
 ### 5. 下载好作者开发的海纳思固件
 
 海纳思系统 U-BOOT 底包: [S805-uboot-hinas.img](https://www.ecoo.top/amlogic/S805-uboot-hinas.img)  2M  
-海纳思 U 盘镜像固件: [Ubuntu_hinas_s805_armhf_5.15.79.img.zip](https://alist.ecoo.top/d/s805/Ubuntu_hinas_s805_armhf_5.15.79.img.zip)
+海纳思 U 盘镜像固件: [Ubuntu_hinas_s805_armhf_5.15.79.img.zip](https://alist.ecoo.top/d/s805/Ubuntu_hinas_s805_armhf_5.15.79.img.zip)  
+下载后请解压。  
+
 
 ## 二、刷入海纳思系统 U-boot 底包
 
@@ -54,7 +56,7 @@ USB 镜像烧写工具: [balenaEtcher.exe](https://alist.ecoo.top/d/s805/balenaE
 ![pic](pic/s805/2.png)   
 ![pic](pic/s805/2-2.png)   
 ![pic](pic/s805/3.png)   
-![pic](pic/s805/3-2.png)   
+![pic](pic/s805/3-3.jpg)   
 
 ### 2. 双公头 usb 连接：