Update README.md

Author: realA10001986

README.md

@@ -328,7 +328,7 @@ Note that the TCD's firmware must be up to date for BTTFN. You can use [this](ht
 
 ![BTTFN connection](img/family-wifi-bttfn.png)
 
-In order to connect your Dash Gauges to the TCD using BTTFN, just enter the TCD's IP address or hostname in the **_IP address or hostname of TCD_** field in the Dash Gauges's Config Portal. On the TCD, no special configuration is required. Note that you need TCD firmware 2.9.1 or later for using a hostname; previous versions only work with an IP address.
+In order to connect your Dash Gauges to the TCD using BTTFN, just enter the TCD's IP address or hostname in the **_IP address or hostname of TCD_** field in the Dash Gauges's Config Portal. On the TCD, no special configuration is required.
 
 Afterwards, the Dash Gauges and the TCD can communicate wirelessly and 
 - play time travel sequences in sync,