Yes, you can use the E6 radio control transmitter (from the TinyHawk RTF) with the TinyHawk Freestyle. You will just need to use Betaflight Configurator 10.5.1 ( and copy-paste the CLI settings from here:

However, if you are using an older E6 transmitter and are having issue binding with your Freestyle, please re-flash the AIO Board with the custom firmware here:

Then, apply the CLI settings from here: