Hello, Thanks for the reply. I am using S32K148 EVB Rev A. I tried updating the openSDA firmware but the board is not going to Bootloader mode. I pressed and held the reset switch SW5 and then connected the USB cable but the board does not go to bootloader mode. Please help me with this. I am trying to update the openSDA firmware from 2 days but it is not going in bootloader mode. Also tried to flash the rbf image file using S32 Design Studio IDE but error occurs during the flashing.