diff --git a/README.md b/README.md
index 9b1e7ab..28691b3 100644
--- a/README.md
+++ b/README.md
@@ -90,12 +90,14 @@ Here's how you can flash the firmware on DevTerm(A06 or CM4) or a PC running Ubu
 ## Gearbox 
 ### A04
 
-Gearbox is a script tool used to adjust the big.LITTLE architecture of the A06 chip.  
+Gearbox is a script tool used to adjust the A04 chip.  
 you can get it by running 
 ```
 sudo apt update 
 sudo apt install -y devterm-gearbox-a04
 ```
+you can run `devterm-gearbox-a04` to see the current core status.
+