Hi just bought a PX-5S a week ago. I recently tried updating the firmware to v 1.11. I downloaded the v 1.11 file from casio, uploaded it into the root folder of my USB, plugged the USB into the piano, and started te updating process. The instrument category light began lighting up one by one as expected, but the update seemed to stall out after the third light lit up and after a few minutes the screen showed a message saying that the update file couldn't be found. I tried to update a few times with the same result each time. Do I need to put the file in a specific place in the USB drive? Does it need to be the only file on the drive? Do I need to update to v 1.10 first before I can update to v 1.11? I checked on the casio download page but could only find the file for v 1.11. Please advise as to what I should check. Thanks!