Update README.md

README.md

@@ -29,11 +29,11 @@ dd if=$imageName bs=512 iflag=count_bytes of=somefile_or_device count=$(ls -s --
 
 ## Middleware for the Inner-Tracker (IT) system
 ```diff
-+ Last change made to this section: 06/04/2021
++ Last change made to this section: 15/04/2021
 ```
 
 **Suggested software and firmware versions:**
-- Software git branch / tag : `Dev` / `IT-v4.0`
+- Software git branch / tag : `Dev` / `v4.00`
 - Firmware tag: `4.0`
 - Mattermost forum: `cms-it-daq` (https://mattermost.web.cern.ch/cms-it-daq/)