diff --git a/CHANGELOG.md b/CHANGELOG.md
index 71a939b..ad65292 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,11 @@
-### Version 2.0.0 (code 200) changelog
-    - Instead of make, it was switched to build with NDK
-    - File/partition sizes were given during backup/flash operations.
-    - The use of `fprintf` has started for all error messages.
-
-|   END OF VERSION 2.0.0 CHANGELOG   |
+### Version 2.1.0 (code 210) changelog
+    - The main usage structure has been changed.
+    - A more organized and functional code was provided. For example, separate values were not used for the same type of control all the time. Everything was done with a single function.
+    - Smoother error processing was performed.
+    - There were a lot of arguments, it was cleared up. So the usage change I mentioned above has occurred.
+    - The exit codes were organized according to the sysexits library.
+    - Better deb builder script.
+    - In short, a lot of missing and errors that happened in 2.0.0 have been fixed
+    
+|   END OF VERSION 2.1.0 CHANGELOG   |
 |------------------------------------|