diff --git a/Create-DevTerm-A06-OS-image-from-scratch.md b/Create-DevTerm-A06-OS-image-from-scratch.md
index 1aa39d0..85d9535 100644
--- a/Create-DevTerm-A06-OS-image-from-scratch.md
+++ b/Create-DevTerm-A06-OS-image-from-scratch.md
@@ -27,9 +27,12 @@ cd ~/build && ./compile.sh
 ``` 
 
 after image done  
-unzip `linux-dtb-current-rockchip64.db`, `linux-image-current-rockchip64.dtb`  
+uncompress the  
+`linux-dtb-current-rockchip64_21.08.0-trunk_arm64.deb`  
+`linux-image-current-rockchip64_21.08.0-trunk_arm64.deb`  
+
 and then combine all files ,all the postinst, preinst,prerm,postrm  
-to be one `devterm-kernel-current-cpi-a06.dtb`    
+to be one `devterm-kernel-current-cpi-a06.deb`    
 the reason is if not doing this , `apt-get upgrade` will replace the linux-dto,linux-image* in future, which will cause boot failed  
 so to keep a06 linux kernel in safe , I made devterm-kernel-current-cpi-a06