HUSKYLENS 2 Wifi password _ char not on the keyboard

I recently bought the HUSKYLENS 2 with the Wifi Module. I just updated firmware to the latest version and I am wanting to connect it to my Wifi network. My WiFi network contains a _ character that is not available on the touchscreen keyboard. I have many devices and can't change the password. Is there a worksround for this or can it be added to the keyboard during a firmware update? 

Thanks

Bill