diff --git a/EExImportBtl.h b/EExImportBtl.h
index e1ce2c2..a454c68 100644
--- a/EExImportBtl.h
+++ b/EExImportBtl.h
@@ -36,5 +36,6 @@ class __declspec( novtable) IImportBtl
 
 //-----------------------------------------------------------------------------
 extern "C" {
+   EEX_EXPORT bool SetBtlAuxDir( const std::string& sBtlAuxDir) ;
    EEX_EXPORT IImportBtl* CreateImportBtl( void) ;
 }
diff --git a/EInAPI.h b/EInAPI.h
index 43e69bf..6434773 100644
--- a/EInAPI.h
+++ b/EInAPI.h
@@ -100,6 +100,7 @@ EIN_EXPORT BOOL __stdcall EgtSaveMachGroupToFile( int nMGroupId, const wchar_t*
 
 // Exchange
 EIN_EXPORT int  __stdcall EgtGetFileType( const wchar_t* wsFilePath) ;
+EIN_EXPORT BOOL __stdcall EgtSetBtlAuxDir( const wchar_t* wsBtlAuxDir) ;
 EIN_EXPORT BOOL __stdcall EgtImportBtl( const wchar_t* wsFilePath, int nFlag) ;
 EIN_EXPORT BOOL __stdcall EgtImportBtlx( const wchar_t* wsFilePath, int nFlag) ;
 EIN_EXPORT BOOL __stdcall EgtImportCnc( const wchar_t* wsFilePath, int nFlag) ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 9a98ca9..693103b 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -107,6 +107,7 @@ EXE_EXPORT bool ExeSaveMachGroupToFile( int nMGroupId, const std::string& sFileP
 
 // Exchange
 EXE_EXPORT int  ExeGetFileType( const std::string& sFilePath) ;
+EXE_EXPORT bool ExeSetBtlAuxDir( const std::string& sBtlAuxDir) ;
 EXE_EXPORT bool ExeImportBtl( const std::string& sFilePath, int nFlag) ;
 EXE_EXPORT bool ExeImportBtlx( const std::string& sFilePath, int nFlag) ;
 EXE_EXPORT bool ExeImportCnc( const std::string& sFilePath, int nFlag) ;
diff --git a/EgtKeyCodes.h b/EgtKeyCodes.h
index ba8d31c..5b018d9 100644
--- a/EgtKeyCodes.h
+++ b/EgtKeyCodes.h
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------
 //  EgalTech 2015-2021
 //----------------------------------------------------------------------------
-// File : EgtKeyCodes.h       Data : 31.07.21        Versione : 2.3h1
+// File : EgtKeyCodes.h       Data : 06.09.21        Versione : 2.3i1
 // Contenuto : Costanti per codici di protezione librerie di base.
 //
 //
@@ -14,6 +14,7 @@
 //             01.08.19 DS Portato a 21 KEY_BASELIB_VER.
 //             22.02.20 DS Aggiunta costante KEYOPT_EMK_NC_OFF.
 //             04.08.20 DS Portato a 22 KEY_BASELIB_VER.
+//             01.01.21 DS Nuova gestione KEY_BASELIB_VER con versione prodotto e mese.
 //
 //----------------------------------------------------------------------------
 
@@ -21,7 +22,7 @@
 
 //----------------------------------------------------------------------------
 const int KEY_BASELIB_PROD = 207 ;
-const int KEY_BASELIB_VER = 2308 ;
+const int KEY_BASELIB_VER = 2309 ;
 const int KEY_BASELIB_LEV = 1 ;
 
 //----------------------------------------------------------------------------