diff --git a/examples/platforms/nrf52811/radio.c b/examples/platforms/nrf52811/radio.c
index 4d984c24c..96ae0c563 100644
--- a/examples/platforms/nrf52811/radio.c
+++ b/examples/platforms/nrf52811/radio.c
@@ -722,6 +722,7 @@ void nrf_802154_receive_failed(nrf_802154_rx_error_t error)
     switch (error)
     {
     case NRF_802154_RX_ERROR_INVALID_FRAME:
+    case NRF_802154_RX_ERROR_DELAYED_TIMEOUT:
         sReceiveError = OT_ERROR_NO_FRAME_RECEIVED;
         break;
 
@@ -736,6 +737,8 @@ void nrf_802154_receive_failed(nrf_802154_rx_error_t error)
     case NRF_802154_RX_ERROR_RUNTIME:
     case NRF_802154_RX_ERROR_TIMESLOT_ENDED:
     case NRF_802154_RX_ERROR_ABORTED:
+    case NRF_802154_RX_ERROR_DELAYED_TIMESLOT_DENIED:
+    case NRF_802154_RX_ERROR_INVALID_LENGTH:
         sReceiveError = OT_ERROR_FAILED;
         break;
 
@@ -774,6 +777,8 @@ void nrf_802154_transmit_failed(const uint8_t *aFrame, nrf_802154_tx_error_t err
     {
     case NRF_802154_TX_ERROR_BUSY_CHANNEL:
     case NRF_802154_TX_ERROR_TIMESLOT_ENDED:
+    case NRF_802154_TX_ERROR_ABORTED:
+    case NRF_802154_TX_ERROR_TIMESLOT_DENIED:
         setPendingEvent(kPendingEventChannelAccessFailure);
         break;
 
diff --git a/examples/platforms/nrf52811/random.c b/examples/platforms/nrf52811/random.c
index d9ac827b4..c0fb550d0 100644
--- a/examples/platforms/nrf52811/random.c
+++ b/examples/platforms/nrf52811/random.c
@@ -162,7 +162,11 @@ void nrf5RandomInit(void)
 
 void nrf5RandomDeinit(void)
 {
-    // Intentionally empty.
+    generatorStop();
+
+    NVIC_DisableIRQ(RNG_IRQn);
+    NVIC_ClearPendingIRQ(RNG_IRQn);
+    NVIC_SetPriority(RNG_IRQn, 0);
 }
 
 uint32_t otPlatRandomGet(void)
diff --git a/examples/platforms/nrf52840/radio.c b/examples/platforms/nrf52840/radio.c
index ff219d22c..1ee0a7225 100644
--- a/examples/platforms/nrf52840/radio.c
+++ b/examples/platforms/nrf52840/radio.c
@@ -723,6 +723,7 @@ void nrf_802154_receive_failed(nrf_802154_rx_error_t error)
     switch (error)
     {
     case NRF_802154_RX_ERROR_INVALID_FRAME:
+    case NRF_802154_RX_ERROR_DELAYED_TIMEOUT:
         sReceiveError = OT_ERROR_NO_FRAME_RECEIVED;
         break;
 
@@ -737,6 +738,7 @@ void nrf_802154_receive_failed(nrf_802154_rx_error_t error)
     case NRF_802154_RX_ERROR_RUNTIME:
     case NRF_802154_RX_ERROR_TIMESLOT_ENDED:
     case NRF_802154_RX_ERROR_ABORTED:
+    case NRF_802154_RX_ERROR_DELAYED_TIMESLOT_DENIED:
     case NRF_802154_RX_ERROR_INVALID_LENGTH:
         sReceiveError = OT_ERROR_FAILED;
         break;
@@ -776,6 +778,8 @@ void nrf_802154_transmit_failed(const uint8_t *aFrame, nrf_802154_tx_error_t err
     {
     case NRF_802154_TX_ERROR_BUSY_CHANNEL:
     case NRF_802154_TX_ERROR_TIMESLOT_ENDED:
+    case NRF_802154_TX_ERROR_ABORTED:
+    case NRF_802154_TX_ERROR_TIMESLOT_DENIED:
         setPendingEvent(kPendingEventChannelAccessFailure);
         break;