I've just upgraded to MCUXpresso 10.3 from 10.2.1. I now want to upgrade my SDK from 2.4.1 to 2.5 and also add another middleware driver to the SDK (USB). I have generated a new SDK package for MK27 using NXP's SDK builder like the last time. After I installed the SDK (tried both global and locally in workspace), I want to manage the package and import the new stuff into my project. There is however a problem because I am not able to select "USB" middleware. Furthermore, also the FatFS which I'm already using in my project in not listed for selection. Only the SDMMC stack is there to select. As seen from the attached picture , the USB drivers (and FatFS) is part of the installed SDK. So, why can't I select them and/or how can I get around this problem ?