Thanks for reply, when I first tried the board it didn’t recognise the GPS board so had to update to V 1.6 firmware and then it recognized the GPS.
I also tried 1.7 beta firmware, to see if that helped with the IMU but that didn’t help.
I purchased from Mouser in the UK. I’ve placed order for another two boards to try from Mouser, I hope its just a one off and not a bad batch of boards they have in stock in the UK.
Thanks for advice, if it all works ok will look at getting the mux board and all the different sensor boards.