[bootloade] Fix freezing

bootloader/interface/menus/home/home.cpp

@@ -33,7 +33,7 @@ bool slotB_submenu() {
 }
 
 bool installer_submenu() {
-
+  return false;
 }
 
 bool about_submenu() {

bootloader/utility.h

@@ -2,10 +2,11 @@
 #define _BOOTLOADER_ITOA_H_
 
 namespace Bootloader {
-  namespace Utility {
+  class Utility {
+    public:
       static char * itoa(int value, char * result, int base);
       static int versionSum(const char * version, int length); 
-  }
+  };
 }
 
 #endif