From iLevil:
"You have configure the auxiliary port on the iLevil to a specific baud rate. The output default for the iLevil is 230400, but the iFly does not go that high, so we need to change it to 115200.
In order to do this, you need an iPad and an app called AHRS utility (download from the App store) Connect your tablet to the iLevil via WiFi. Open the app. Go to device config, enable configuration and under "write to memory" type "8" under address and "1152" under value, then click apply.
Write to memory: 8 1152 Apply"
I don't have an iPad or any other kind of tablet (other than the iFly), so will have to impose on a friend. Very poor product interface on the part of iLevil.