I am trying to run this evaluation board with JLINK debugger, but never seem able to get USB operating. I downloaded k20dx_mimxrt1050_evk_hyper_if_crc.bin and copied into maintenance folder, but the J-LINK usb port never appears and the J-LINK app never sees a USB emulator. When I copy the file to the maintenance folder, do I wait before re-powering the unit, or re-power immediately. If I wait, I get a fail.txt with a transfer timeout. Instructions are not too clear, perhaps there is a site with more comprehensive steps of what to do and what to expect somewhere.