I actually work on a Kinetis K22 with a utasker bootloader that take the .bin program file from an external SDcard. I develop using MCUXpresso tool.
I wanna start a new project using a smaller Microcontroller, that could be the MKL02Z16VFG4 (because I need 2 I2C and 2 UART).
Is there a free bootloader (free also for commercial use), that I can use to program the microcontroller directly from UART or I2C ? (I have read about MCUbootloader or Kinetis bootloader but I have not understood wich could be used or the differences).