diff --git a/prj/TCPClient/Middle/QDXnetworkStack/qdx_tcp_logic.c b/prj/TCPClient/Middle/QDXnetworkStack/qdx_tcp_logic.c
index 3f14c96..27388e0 100644
--- a/prj/TCPClient/Middle/QDXnetworkStack/qdx_tcp_logic.c
+++ b/prj/TCPClient/Middle/QDXnetworkStack/qdx_tcp_logic.c
@@ -268,6 +268,21 @@ static void parse_and_dispatch_tlv(TcpStreamCtx_t *ctx, const uint8_t *packet,
     const uint8_t *value = packet + offset + 3;
 
     switch (type) {
+    case TYPE_HEARTBEAT: {
+      /* Server heartbeat response — update activity timestamp */
+      ctx->last_activity_ms = qdx_port_get_tick_ms();
+      break;
+    }
+    case TYPE_ACK_PAYLOAD: {
+      if (len >= 3) {
+        uint16_t ack_seq = qdx_read_u16_le(value);
+        uint8_t status = value[2];
+        uint16_t err_code = (len >= 5) ? qdx_read_u16_le(value + 3) : 0;
+        DBG_LOGIC("<< [%s] ACK: seq=%d status=%d err=0x%04x\r\n",
+                  ctx->label, (int)ack_seq, (int)status, (int)err_code);
+      }
+      break;
+    }
     case TYPE_DEVID_ASSIGN: {
       if (len >= sizeof(DevIDAssignment_t)) {
         uint16_t new_id = qdx_read_u16_le(value);
diff --git a/prj/TCPClient/User/main.c b/prj/TCPClient/User/main.c
index 0efc881..3d008d1 100644
--- a/prj/TCPClient/User/main.c
+++ b/prj/TCPClient/User/main.c
@@ -620,8 +620,8 @@ int main(void)
     {
         Config2D_t test_cfg2d;
         memset(&test_cfg2d, 0, sizeof(test_cfg2d));
-        test_cfg2d.TargetWidth  = 64;   /* ROI extraction 64x64 */
-        test_cfg2d.TargetHeight = 64;
+        test_cfg2d.TargetWidth  = SENSOR_WIDTH;   /* Full resolution */
+        test_cfg2d.TargetHeight = SENSOR_HEIGHT;
         test_cfg2d.TriggerRoiX  = 0;   /* Full-frame trigger area */
         test_cfg2d.TriggerRoiY  = 0;
         test_cfg2d.TriggerRoiW  = SENSOR_WIDTH;