Update README.md

Author: patience4711

README.md

@@ -12,7 +12,7 @@ You can use the provided binary but if you must compile it yourself: Use arduino
 <br>Please note: by popular demand I have published the code here but i do not feel responsible for problems as to compiling. Impossible for me to know why it doesn't compile in your situation.
 
 ## downloads
-feb 12 2024: There is a new version 10_9 available, see changelog. This is a beta version not yet tested.<br>
+aug 2 2024: There is a new version 10_9a available, see changelog. This is a beta version not yet tested.<br>
 Download [ESP_ECU-v10_9](https://github.com/patience4711/read-APSystems-YC600-QS1-DS3/blob/main/ESP-ECU-v10_9.bin);
 
 july 26 2023: There is a new version 10_8 available, see changelog.<br> 
@@ -55,7 +55,8 @@ The interesting values are send via mqtt and displayed on the main page.
 ![graph2](https://user-images.githubusercontent.com/12282915/139062602-71e92216-9703-4fc4-acc6-fabf544c4ffd.jpg)
 
 ## changelog ##
-version ESP-ECU_V10_9:
+version ESP-ECU_V10_9a:
+-  fixed a bug as to the addition of the 9th inverter
 -  fixed a swap of the yc600 channels.
 -  fixed a bug as to the zigbeeUp display in about.