diff --git a/apps/iap/iap-lingo0.c b/apps/iap/iap-lingo0.c
index e69b42b..2cb33c4 100644
--- a/apps/iap/iap-lingo0.c
+++ b/apps/iap/iap-lingo0.c
@@ -432,7 +432,7 @@ void iap_handlepkt_mode0(const unsigned int len, const unsigned char *buf)
                 IAP_TX_PUT(lingo);
                 IAP_TX_PUT(LINGO_MAJOR(lingo));
                 IAP_TX_PUT(LINGO_MINOR(lingo));
-
+                device.lingoes |= BIT_N(lingo);
                 iap_send_tx();
             } else {
                 cmd_ack(cmd, IAP_ACK_BAD_PARAM);
@@ -445,6 +445,34 @@ void iap_handlepkt_mode0(const unsigned int len, const unsigned char *buf)
          * Sent from the iPod to the device
          */
 
+        /* RequestTransportMaxPayloadSize (0x11)
+         *
+         * Packet format (offset in buf[]: Description)
+         * 0x00: Lingo ID: General Lingo, always 0x00
+         * 0x01: Command, always 0x11
+         * 0x02-0x03: transId
+         */
+        case 0x10:
+            {
+                unsigned char transIdHigh = buf[2];
+                unsigned char transIdLow = buf[3];
+                IAP_TX_INIT(0x00, 0x12);
+                IAP_TX_PUT(transIdHigh);
+                IAP_TX_PUT(transIdLow);
+                IAP_TX_PUT_U16(0xffff);
+                iap_send_tx();
+            }
+            break;
+
+        /* ReturnTransportMaxPayloadSize (0x12)
+         *
+         * Packet format (offset in buf[]: Description)
+         * 0x00: Lingo ID: General Lingo, always 0x00
+         * 0x01: Command, always 0x11
+         * 0x02-0x03: transId
+         * 0x04-0x05: maxPayload
+         */
+
         /* IdentifyDeviceLingoes (0x13);
          *
          * Used by a device to inform the iPod of the devices
@@ -1045,9 +1073,8 @@ void iap_handlepkt_mode0(const unsigned int len, const unsigned char *buf)
         {
 #ifdef LOGF_ENABLE
             logf("iap: Unsupported Mode00 Command");
-#else
-            cmd_ack(cmd, IAP_ACK_BAD_PARAM);
 #endif
+            cmd_ack(cmd, IAP_ACK_BAD_PARAM);
             break;
         }
     }