while (pckLen > 0) {
                pckSize = MIN(USB_CMD_DATA_SIZE, pckLen);
                LED_B_ON();
-               cmd_send(CMD_ACK, 1, BigBuf_get_traceLen(), pckSize, trace + BigBuf_get_traceLen() - pckLen, pckSize);
+               cmd_send(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K, 1, BigBuf_get_traceLen(), pckSize, trace + BigBuf_get_traceLen() - pckLen, pckSize);
                LED_B_OFF();
 
                pckLen -= pckSize;
        }
 
        LED_B_ON();
-       cmd_send(CMD_ACK,2,0,0,0,0);
+       cmd_send(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K,2,0,0,0,0);
        LED_B_OFF();
 
        clear_trace();