diff --git a/MAX/Libraries/PeriphDrivers/Source/UART/uart_ai87.c b/MAX/Libraries/PeriphDrivers/Source/UART/uart_ai87.c
index dfba30b..b9ff550 100644
--- a/MAX/Libraries/PeriphDrivers/Source/UART/uart_ai87.c
+++ b/MAX/Libraries/PeriphDrivers/Source/UART/uart_ai87.c
@@ -141,6 +141,11 @@ int MXC_UART_SetFrequency(mxc_uart_regs_t *uart, unsigned int baud, mxc_uart_clo
         return E_BAD_PARAM;
     }
 
+    // Default OSR
+    //  Setting LPUART Over-Sampling Rate in MXC_UART_RevB_SetFrequency function overwrites
+    //  the sampling rate set below for the ERTCO.
+    uart->osr = 5;
+
     unsigned int input_clock_freq = 0;
     switch (clock) {
     case MXC_UART_APB_CLK:
diff --git a/MAX/Libraries/PeriphDrivers/Source/UART/uart_me12.c b/MAX/Libraries/PeriphDrivers/Source/UART/uart_me12.c
index 23d9f75..c685f50 100644
--- a/MAX/Libraries/PeriphDrivers/Source/UART/uart_me12.c
+++ b/MAX/Libraries/PeriphDrivers/Source/UART/uart_me12.c
@@ -110,6 +110,9 @@ int MXC_UART_SetFrequency(mxc_uart_regs_t *uart, unsigned int baud, mxc_uart_clo
         return E_BAD_PARAM;
     }
 
+    // Default OSR
+    uart->osr = 5;
+
     switch (clock) {
     case MXC_UART_APB_CLK:
         clock_freq = SystemCoreClock / 2;
diff --git a/MAX/Libraries/PeriphDrivers/Source/UART/uart_me30.c b/MAX/Libraries/PeriphDrivers/Source/UART/uart_me30.c
index a54f770..9963fa8 100644
--- a/MAX/Libraries/PeriphDrivers/Source/UART/uart_me30.c
+++ b/MAX/Libraries/PeriphDrivers/Source/UART/uart_me30.c
@@ -113,6 +113,9 @@ int MXC_UART_SetFrequency(mxc_uart_regs_t *uart, unsigned int baud, mxc_uart_clo
         return E_BAD_PARAM;
     }
 
+    // Default OSR
+    uart->osr = 5;
+
     switch (clock) {
     case MXC_UART_APB_CLK:
         clock_freq = PeripheralClock;
diff --git a/MAX/Libraries/PeriphDrivers/Source/UART/uart_me55.c b/MAX/Libraries/PeriphDrivers/Source/UART/uart_me55.c
index d04def9..4662b16 100644
--- a/MAX/Libraries/PeriphDrivers/Source/UART/uart_me55.c
+++ b/MAX/Libraries/PeriphDrivers/Source/UART/uart_me55.c
@@ -127,6 +127,9 @@ int MXC_UART_SetFrequency(mxc_uart_regs_t *uart, unsigned int baud, mxc_uart_clo
         return E_BAD_PARAM;
     }
 
+    // Default OSR
+    uart->osr = 5;
+
     switch (clock) {
     case MXC_UART_APB_CLK:
         clock_freq = SystemCoreClock / 2;
diff --git a/MAX/msdk_sha b/MAX/msdk_sha
index 91ddc38..41b7577 100644
--- a/MAX/msdk_sha
+++ b/MAX/msdk_sha
@@ -1 +1 @@
-4664d3bad376c6c1f14515a4f3d5f229c3f50432
+11dfd2e78540a6b07796a898d5c82978302acaf1