I tried to update the code of my transformers le pinball for the first time today. I followed the instructions step by step until the display told me to "insert the USB". When I inserted the USB stick in the designated slot nothing happened. The display didn't change still saying to "insert the USB". I am using the same USB memory that I use to update my ACDC so I don't know what's wrong. The memory has a light that indicates it is connected to a pc or USB port and it lights, but the machine doesn't read it......Can anybody help me / give advice to solve this?