For the S310 stack the bootloader does not set a SD_MBR_COMMAND_INIT_SD command. What needs to be done for the S130?
#ifndef S310_STACK
sd_mbr_command_t com = {SD_MBR_COMMAND_INIT_SD, };
err_code = sd_mbr_command(&com);
APP_ERROR_CHECK(err_code);
err_code = sd_softdevice_vector_table_base_set(BOOTLOADER_REGION_START);
APP_ERROR_CHECK(err_code);
#endif // S310_STACK
If this should be called for the S130, which file should I use? The header file nrf_mbr.h only exists for the S110 and the S120 version so it seems.