diff --git a/common/inc/lx_api.h b/common/inc/lx_api.h
index ed7d43d..cd666c8 100644
--- a/common/inc/lx_api.h
+++ b/common/inc/lx_api.h
@@ -26,7 +26,7 @@
 /*  APPLICATION INTERFACE DEFINITION                       RELEASE        */
 /*                                                                        */
 /*    lx_api.h                                            PORTABLE C      */
-/*                                                           6.x          */
+/*                                                           6.4.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    William E. Lamie, Microsoft Corporation                             */
@@ -86,9 +86,9 @@
 /*                                            bitmap and obsolete count   */
 /*                                            cache for NOR flash,        */
 /*                                            resulting in version 6.3.0  */
-/*  xx-xx-xxxx     Xiuwen Cai               Modified comment(s),          */
+/*  12-31-2023     Xiuwen Cai               Modified comment(s),          */
 /*                                            added configuration checks, */
-/*                                            resulting in version 6.x    */
+/*                                            resulting in version 6.4.0  */
 /*                                                                        */
 /**************************************************************************/
 
@@ -200,7 +200,7 @@ typedef unsigned long long                      ULONG64;
 /* Define basic constants for the LevelX Stack.  */
 #define AZURE_RTOS_LEVELX
 #define LEVELX_MAJOR_VERSION                        6
-#define LEVELX_MINOR_VERSION                        3
+#define LEVELX_MINOR_VERSION                        4
 #define LEVELX_PATCH_VERSION                        0
 
 
diff --git a/common/src/lx_nand_flash_data_page_copy.c b/common/src/lx_nand_flash_data_page_copy.c
index d575f70..0c3714c 100644
--- a/common/src/lx_nand_flash_data_page_copy.c
+++ b/common/src/lx_nand_flash_data_page_copy.c
@@ -40,7 +40,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _lx_nand_flash_data_page_copy                       PORTABLE C      */ 
-/*                                                           6.x          */
+/*                                                           6.4.0        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Xiuwen Cai, Microsoft Corporation                                   */
@@ -79,10 +79,10 @@
 /*    DATE              NAME                      DESCRIPTION             */
 /*                                                                        */
 /*  03-08-2023     Xiuwen Cai               Initial Version 6.2.1         */
-/*  xx-xx-xxxx     Xiuwen Cai               Modified comment(s),          */
+/*  12-31-2023     Xiuwen Cai               Modified comment(s),          */
 /*                                            fixed sequential checking   */
 /*                                            logic,                      */
-/*                                            resulting in version 6.x    */
+/*                                            resulting in version 6.4.0  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _lx_nand_flash_data_page_copy(LX_NAND_FLASH* nand_flash, ULONG logical_sector, ULONG source_block, USHORT src_block_status,