diff --git a/autopts/pybtp/btp/mesh.py b/autopts/pybtp/btp/mesh.py
index 60e708ce37..0f16683f9e 100644
--- a/autopts/pybtp/btp/mesh.py
+++ b/autopts/pybtp/btp/mesh.py
@@ -490,7 +490,7 @@ def mesh_input_string(string):
     iutctl.btp_socket.send_wait_rsp(*MESH['input_str'], data=data)
 
 
-def mesh_iv_update_test_mode(enable):
+def mesh_iv_update_test_mode(enable, auto_disable = False):
     logging.debug("%s", mesh_iv_update_test_mode.__name__)
 
     iutctl = get_iut()
@@ -500,6 +500,11 @@ def mesh_iv_update_test_mode(enable):
     else:
         data = bytearray(struct.pack("<B", 0x00))
 
+    if auto_disable:
+        data.extend(bytearray(struct.pack("<B", 0x01)))
+    else:
+        data.extend(bytearray(struct.pack("<B", 0x00)))
+
     iutctl.btp_socket.send_wait_rsp(*MESH['iv_update_test_mode'], data=data)
 
     stack = get_stack()
@@ -2067,6 +2072,23 @@ def mesh_blob_lost_target_ev(mesh, data, data_len):
 
     stack.mesh.blob_lost_target = True
 
+def mesh_snb_received_ev(mesh, data, data_len):
+    logging.debug("%s %r %r", mesh_snb_received_ev.__name__, data, data_len)
+
+    hdr_fmt = '<BH'
+
+    (flags, iv_idx) = struct.unpack_from(hdr_fmt, data, 0)
+    logging.info(f'Flags: {flags}, iv_idx: {iv_idx}')
+
+def mesh_prb_received_ev(mesh, data, data_len):
+    logging.debug("%s %r %r", mesh_prb_received_ev.__name__, data, data_len)
+
+    hdr_fmt = '<BH'
+
+    (flags, iv_idx) = struct.unpack_from(hdr_fmt, data, 0)
+    logging.info(f'Flags: {flags}, iv_idx: {iv_idx}')
+    
+
 MESH_EV = {
     defs.MESH_EV_OUT_NUMBER_ACTION: mesh_out_number_action_ev,
     defs.MESH_EV_OUT_STRING_ACTION: mesh_out_string_action_ev,
@@ -2085,4 +2107,6 @@ def mesh_blob_lost_target_ev(mesh, data, data_len):
     defs.MESH_EV_PROV_NODE_ADDED: mesh_prov_node_added_ev,
     defs.MESH_EV_MODEL_RECV: mesh_model_recv_ev,
     defs.MESH_EV_BLOB_LOST_TARGET: mesh_blob_lost_target_ev,
+    defs.MESH_EV_SNB: mesh_snb_received_ev,
+    defs.MESH_EV_PRB: mesh_prb_received_ev,
 }
diff --git a/autopts/pybtp/defs.py b/autopts/pybtp/defs.py
index b57bb0087c..e16b75fac3 100644
--- a/autopts/pybtp/defs.py
+++ b/autopts/pybtp/defs.py
@@ -393,6 +393,9 @@ def BIT(bit):
 MESH_EV_PROV_NODE_ADDED = 0x8e
 MESH_EV_MODEL_RECV = 0x8f
 MESH_EV_BLOB_LOST_TARGET = 0x90
+MESH_EV_SNB = 0x91
+MESH_EV_PRB = 0x92
+
 MMDL_READ_SUPPORTED_COMMANDS = 0x01
 MMDL_GEN_ONOFF_GET = 0x02
 MMDL_GEN_ONOFF_SET = 0x03
diff --git a/autopts/wid/mesh.py b/autopts/wid/mesh.py
index d9153aa464..2e048b4b41 100644
--- a/autopts/wid/mesh.py
+++ b/autopts/wid/mesh.py
@@ -820,12 +820,19 @@ def hdl_wid_90(_: WIDParams):
     return bool(stack.mesh.is_provisioned.data)
 
 
-def hdl_wid_94(_: WIDParams):
+def hdl_wid_94(params: WIDParams):
     """
     Implements: IUT_SEND_SECURE_NETWORK_BEACON_WITH_FLAGS
     description: Please order IUT to send a secure network beacon with Key
                  Refresh Flag set to %d and IV Update Flag set to %d
     """
+
+    cases = ['MESH/NODE/IVU/BI-01','MESH/NODE/IVU/BI-07']
+    for case in cases:
+        if case in params.test_case_name:
+            logging.info(f">>>>>>>>>>>>>> turn off test mode {case}")
+            btp.mesh_iv_update_test_mode(False)
+
     return True
 
 
@@ -1049,7 +1056,7 @@ def hdl_wid_220(_: WIDParams):
     return True
 
 
-def hdl_wid_221(_: WIDParams):
+def hdl_wid_221(param: WIDParams):
     """
     Implements: IUT_READY_FOR_UPDATE_IN_PROGRESS_SECURE_NETWORK_BEACON
     description: The Lower Tester will advertise a new Secure Network beacon
@@ -1058,8 +1065,16 @@ def hdl_wid_221(_: WIDParams):
     """
     stack = get_stack()
 
+    auto_disable = False
+
+    test_cases = ['MESH/NODE/IVU/BI-01', 'MESH/NODE/IVU/BI-07']
+    for case in test_cases:
+        if case in param.test_case_name:
+            auto_disable = True
+            break
+
     if not stack.mesh.is_iv_test_mode_enabled.data:
-        btp.mesh_iv_update_test_mode(True)
+        btp.mesh_iv_update_test_mode(True, auto_disable)
     return True