Re: New Linux (Ubuntu) Samsung S6 tab
From the mplab xpress website (I can't post links, evidently I'm not worthy), look at the "quick start" document (pdf):
Connect the MPLAB Xpress Evaluation Board to your PC with a Micro-USB cable. The MPLAB Xpress Evaluation Board will appear as a USB mass storage device or FLASH drive. Copy the generated .hex file to the root directory** of the MPLAB Xpress Evaluation Board’s FLASH drive. Note: The MPLAB Xpress Evaluation Board only recognizes files placed in the root directory. Perform a hard reset using the RESET button on the board.
This apparently works with mplab xpress development boards, curiosity development bards, the Explorer 16/32 development board, and the pickit4 programmer/debugger.
This obviously makes debugging in circuit pretty much a trial-and-error thing.