Index: sources/update/IDataProvider.h
===================================================================
diff -u -r20b370a54d2737831b307a0de82aec9e06e2b772 -r8ed1ad9f8c2de2ea19dd455cf59b648061c0a998
--- sources/update/IDataProvider.h	(.../IDataProvider.h)	(revision 20b370a54d2737831b307a0de82aec9e06e2b772)
+++ sources/update/IDataProvider.h	(.../IDataProvider.h)	(revision 8ed1ad9f8c2de2ea19dd455cf59b648061c0a998)
@@ -74,7 +74,12 @@
      *
      * \return  The amount of bytes fetched / ran out of data to fill the buffer.
      */
-    virtual std::size_t read(std::size_t offset, unsigned char* pBuffer, std::size_t size_bytes) = 0;
+    virtual std::size_t read(std::size_t offset, unsigned char* pBuffer, std::size_t size_bytes) {
+        (void)offset;
+        (void)pBuffer;
+        (void)size_bytes;
+        return 0; // NOP.
+    }
 
     /*!
      * \brief   Copy a file to a given destination.
@@ -94,7 +99,7 @@
 
         // Use our fileDestination set at constructor if we don't override.
         FILE* pDest = fopen(
-            destination.size() != 0 ? destination.c_str() : fileDestination.c_str(), 
+            destination.size() != 0 ? destination.c_str() : fileDestination.c_str(),
             "wb");
 
         std::size_t copied = 0;
@@ -103,11 +108,11 @@
             rv = true;
             while (rv) {
                 try {
-                    std::size_t sz_r = read(copied, pBuffer, MEMORY_PAGE_SIZE);
+                    std::size_t sz_r = this->read(copied, pBuffer, MEMORY_PAGE_SIZE);
                     if (sz_r == 0) {
                         break;
                     } else {
-                        decrypt(pBuffer, sz_r);
+                        //IDataProvider::decrypt(pBuffer, sz_r);
                         std::size_t sz_w = fwrite(pBuffer, 1, sz_r, pDest);
                         if (sz_w != sz_r) {
                             rv = false;
@@ -117,7 +122,7 @@
                 } catch (...) {
                     rv = false;
                 }
-            }                
+            }
 
             // Close it.
             rv &= (fclose(pDest) == 0);
@@ -143,7 +148,7 @@
      * \param   pBuffer     Buffer to use.
      * \param   size_bytes  Max bytes to return.
      */
-    void decrypt(unsigned char* pBuffer, std::size_t size_bytes) {
+    static void decrypt(unsigned char* pBuffer, std::size_t size_bytes) {
         const unsigned char obs = 71; // Randomly picked value.
         for (uint32 ii = 0; ii < size_bytes; ii++) {
             pBuffer[ii] -= obs;