Index: firmware/App/Controllers/AirTrap.c
===================================================================
diff -u -r32763ee524dc476f47ba41ee6c2a8a0c65ebf1e1 -r20f69d01f2a252eeef3d936dc0983491eb2e7a3d
--- firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision 32763ee524dc476f47ba41ee6c2a8a0c65ebf1e1)
+++ firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision 20f69d01f2a252eeef3d936dc0983491eb2e7a3d)
@@ -7,8 +7,8 @@
 *
 * @file    AirTrap.c
 *
-* @author  (last)      Sameer Kalliadan Poyil
-* @date    (last)      02-Mar-2026
+* @author  (last)      Praneeth Bunne
+* @date    (last)      13-Mar-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  24-Oct-2024
@@ -26,6 +26,7 @@
 #include "Pressures.h"
 #include "Switches.h"
 #include "TaskGeneral.h"
+#include "TestSupport.h"
 #include "Timers.h"
 #include "Utilities.h"
 #include "Valve3Way.h"
@@ -399,7 +400,11 @@
         pendingStopAirTrapController = FALSE;
         result = AIR_TRAP_MANUAL_CONTROL_STATE;
     }
-
+    // Skip fill and lower level events when no tubing set is installed
+    else if ( TRUE == getTestConfigStatus( TEST_CONFIG_TESTING_WITHOUT_TUBING_SET ) )
+    {
+        result = AIR_TRAP_CLOSED_STATE;
+    }
     // Lower air trap level if fluid reaches upper level.
     else if ( AIR_TRAP_LEVEL_FLUID == getLevelSensorState( H16_LEVL ) )
     {
@@ -427,7 +432,6 @@
             result = AIR_TRAP_LOWER_LEVEL_STATE;
         }
     }
-
     // Raise air trap level once at start of treatment (blood priming) or when air detected at lower level
     else if ( ( airTrapWasFilledAtStartOfTreatement != TRUE ) ||
               ( AIR_TRAP_LEVEL_AIR == getLevelSensorState( H17_LEVL ) ) )
Index: firmware/App/Monitors/Pressures.c
===================================================================
diff -u -rbdfb6a7f371e1ac57304c10a9f543509b5751aa9 -r20f69d01f2a252eeef3d936dc0983491eb2e7a3d
--- firmware/App/Monitors/Pressures.c	(.../Pressures.c)	(revision bdfb6a7f371e1ac57304c10a9f543509b5751aa9)
+++ firmware/App/Monitors/Pressures.c	(.../Pressures.c)	(revision 20f69d01f2a252eeef3d936dc0983491eb2e7a3d)
@@ -8,7 +8,7 @@
 * @file    Pressures.c
 *
 * @author  (last)      Varshini Nagabooshanam
-* @date    (last)      04-Feb-2026
+* @date    (last)      13-Mar-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  24-Sep-2024
@@ -590,7 +590,6 @@
     F32 tmpPres             = getTMPPressure();
     F32 fpgaBaroPresPSI     = getPressure( H23_PRES );
 
-
     // Filter inline pressure readings
     filterInlinePressureReadings( fpgaArtPres, fpgaVenPres, tmpPres);
     // Filter the baro pressure
@@ -1216,7 +1215,41 @@
     return result;
 }
 
+/*********************************************************************//**
+* @brief
+* The pressureLimitHandleWidenRequest function validates pressure limit
+* widening request received from the UI.
+* @details \b Message \b Received: MSG_ID_UI_PRESSURE_LIMIT_WIDEN_REQUEST
+* @details \b Message \b Sent: MSG_ID_TD_PRESSURE_LIMIT_WIDEN_RESPONSE
+* @details \b Inputs: none
+* @details \b Outputs: pressure limits widened and stabilization restarted
+* @param message set message from UI
+* @return TRUE if request is valid, FALSE if not
+*************************************************************************/
+BOOL pressureLimitHandleWidenRequest( MESSAGE_T *message )
+{
+    BOOL result = FALSE;
+    REQUEST_REJECT_REASON_CODE_T rejReason = REQUEST_REJECT_REASON_INVALID_REQUEST_FORMAT;
+    UI_RESPONSE_PAYLOAD_T response;
 
+    // Verify message payload length
+    if ( message->hdr.payloadLen == 0 )
+    {
+        // Initiate pressure stabilization
+        signalInitiatePressureStabilization( USE_NORMAL_STABILIZATION_PERIOD );
+        result = TRUE;
+        rejReason = REQUEST_REJECT_REASON_NONE;
+     }
+
+    // Respond to request
+    response.accepted = result;
+    response.rejectionReason = rejReason;
+    sendMessage( MSG_ID_TD_PRESSURE_LIMIT_WIDEN_RESPONSE, COMM_BUFFER_OUT_CAN_TD_2_UI, (U08*)(&response), sizeof( UI_RESPONSE_PAYLOAD_T ) );
+
+    return result;
+}
+
+
 /*************************************************************************
  *                       TEST SUPPORT FUNCTIONS
  *************************************************************************/
Index: firmware/App/Services/FpgaTD.c
===================================================================
diff -u -r28d0fee79edb31bd1813045997c747bbcd0c6af1 -r20f69d01f2a252eeef3d936dc0983491eb2e7a3d
--- firmware/App/Services/FpgaTD.c	(.../FpgaTD.c)	(revision 28d0fee79edb31bd1813045997c747bbcd0c6af1)
+++ firmware/App/Services/FpgaTD.c	(.../FpgaTD.c)	(revision 20f69d01f2a252eeef3d936dc0983491eb2e7a3d)
@@ -7,8 +7,8 @@
 *
 * @file    FpgaTD.c
 *
-* @author  (last)      Sameer Kalliadan Poyil
-* @date    (last)      23-Feb-2026
+* @author  (last)      Jashwant Gantyada
+* @date    (last)      13-Mar-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024
@@ -152,7 +152,7 @@
     U08 h6RotorStatus;                          ///< Reg 346.  H6 rotor status.
     U08 reserved5;                              ///< Reg 347.  Reserved register.
     U16 h12Speed;                               ///< Reg 348.  H12 speed (air pump in RPM).
-    U16 h4RotorRevsCounter;                     ///< Reg 350.  Rotor revs counter
+    U16 h4RotorRevsCounter;                     ///< Reg 350.  H4 rotor revs counter
     U16 baroManufactInfo;                       ///< Reg 352.  Baro sensor manufacturing information.
     U16 baroPresSensitivity;                    ///< Reg 354.  Baro sensor prom coefficient 1.
     U16 baroPresOffset;                         ///< Reg 356.  Baro sensor prom coefficient 2.
@@ -604,9 +604,9 @@
 
 /*********************************************************************//**
  * @brief
- * The rotorRevsCounter function gets the latest blood pump
+ * The getH4RotorRevsCounter function gets the latest blood pump
  * rotor revolutions count.
- * @details \b Inputs:  fpgaSensorReadings.rotorRevsCounter
+ * @details \b Inputs:  fpgaSensorReadings.h4RotorRevsCounter
  * @details \b Outputs: none
  * @return Latest blood pump revolutions count reading.
  *************************************************************************/
Index: firmware/App/Services/FpgaTD.h
===================================================================
diff -u -r28d0fee79edb31bd1813045997c747bbcd0c6af1 -r20f69d01f2a252eeef3d936dc0983491eb2e7a3d
--- firmware/App/Services/FpgaTD.h	(.../FpgaTD.h)	(revision 28d0fee79edb31bd1813045997c747bbcd0c6af1)
+++ firmware/App/Services/FpgaTD.h	(.../FpgaTD.h)	(revision 20f69d01f2a252eeef3d936dc0983491eb2e7a3d)
@@ -7,8 +7,8 @@
 *
 * @file    FpgaTD.h
 *
-* @author  (last)      Sameer Kalliadan Poyil
-* @date    (last)      23-Feb-2026
+* @author  (last)      Jashwant Gantyada
+* @date    (last)      12-Mar-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024
Index: firmware/App/Services/Messaging.c
===================================================================
diff -u -radb1e343d9d707ea451eb842cd6e0baa0ddbde35 -r20f69d01f2a252eeef3d936dc0983491eb2e7a3d
--- firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision adb1e343d9d707ea451eb842cd6e0baa0ddbde35)
+++ firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 20f69d01f2a252eeef3d936dc0983491eb2e7a3d)
@@ -8,7 +8,7 @@
 * @file    Messaging.c
 *
 * @author  (last)      Jashwant Gantyada
-* @date    (last)      29-Jan-2026
+* @date    (last)      13-Mar-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024
@@ -113,6 +113,7 @@
     { MSG_ID_UI_INITIATE_TREATMENT_WORKFLOW,                            &signalUserInitiateTreatment },
     { MSG_ID_UI_UF_PAUSE_RESUME_REQUEST,                                &signalPauseResumeUF },
     { MSG_ID_TESTER_LOGIN_REQUEST,                                      &handleTesterLogInRequest },
+    { MSG_ID_UI_PRESSURE_LIMIT_WIDEN_REQUEST,                           &pressureLimitHandleWidenRequest },
     { MSG_ID_UI_BLOOD_PRIME_CMD_REQUEST,                                &bloodPrimeHandleCmdRequest },
     { MSG_ID_UI_TREATMENT_SET_POINT_BLOOD_FLOW_CHANGE_REQUEST,          &bloodPrimeHandleBloodFlowChangeRequest },
     { MSG_ID_TD_SOFTWARE_RESET_REQUEST,                                 &testTDSoftwareResetRequest },
@@ -167,9 +168,9 @@
     { MSG_ID_TD_EJECTOR_PUBLISH_INTERVAL_OVERRIDE_REQUEST,              &testEjectorDataPublishIntervalOverride },
     { MSG_ID_TD_SET_AIR_TRAP_CONTROL,                                   &testSetAirTrapControl },
     { MSG_ID_TD_HOME_BLOOD_PUMP,                                        &testHomeBloodPump },
-    { MSG_ID_TD_BLOOD_FLOW_ALPHA_Y_INTERCEPT_OVERRIDE_REQUEST,          &testBPFlowAlphaYInterceptOverride },
     { MSG_ID_TD_BLOOD_FLOW_WEAR_A_TERM_OVERRIDE_REQUEST,                &testBPFlowWearATermOverride },
     { MSG_ID_TD_BLOOD_FLOW_WEAR_B_TERM_OVERRIDE_REQUEST,                &testBPFlowWearBTermOverride },
+    { MSG_ID_TD_BLOOD_FLOW_STROKE_VOLUME_OVERRIDE_REQUEST,              &testBPStrokeVolumeOverride },
     { MSG_ID_TD_SET_TEST_CONFIGURATION,                                 &testSetTestConfiguration },
     { MSG_ID_TD_GET_TEST_CONFIGURATION,                                 &testGetTestConfiguration },
     { MSG_ID_TD_RESET_ALL_TEST_CONFIGURATIONS,                          &testResetAllTestConfigurations },
@@ -184,6 +185,7 @@
     { MSG_ID_TD_EJECTOR_OPT_SENSOR_OVERRIDE_REQUEST,                    &testEjectorOpticalSensorOverride },
     { MSG_ID_TD_BLOOD_PRIME_VOLUME_OVERRIDE,                            &testBloodPrimeVolumeOverride },
     { MSG_ID_TD_BLOOD_PRIME_PUBLISH_INTERVAL_OVERRIDE_REQUEST,          &testBloodPrimePublishIntervalOverride },
+    { MSG_ID_TD_ENABLE_VENOUS_BUBBLE_ALARM,                             &testEnableVenousBubbleAlarm },
 };
 
 #define NUM_OF_FUNCTION_HANDLERS (sizeof(MSG_FUNCTION_HANDLER_LOOKUP) / sizeof(MSG_HANDLER_LOOKUP_T))
Index: firmware/App/TDCommon.h
===================================================================
diff -u -r98530527b3d247e5434af3f2463c5677a5d135f3 -r20f69d01f2a252eeef3d936dc0983491eb2e7a3d
--- firmware/App/TDCommon.h	(.../TDCommon.h)	(revision 98530527b3d247e5434af3f2463c5677a5d135f3)
+++ firmware/App/TDCommon.h	(.../TDCommon.h)	(revision 20f69d01f2a252eeef3d936dc0983491eb2e7a3d)
@@ -7,8 +7,8 @@
 *
 * @file    TDCommon.h
 *
-* @author  (last)      Varshini Nagabooshanam
-* @date    (last)      04-Feb-2026
+* @author  (last)      Dara Navaei
+* @date    (last)      06-Mar-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024