[F] Fix the issue that Big Sur Installer doesn't show up

EFI/OC/Config.plist

@@ -802,7 +802,7 @@
 			<key>AvoidRuntimeDefrag</key>
 			<true/>
 			<key>DevirtualiseMmio</key>
-			<false/>
+			<true/>
 			<key>DisableSingleUser</key>
 			<false/>
 			<key>DisableVariableWrite</key>
@@ -1504,7 +1504,7 @@
 			<key>PickerMode</key>
 			<string>External</string>
 			<key>PollAppleHotKeys</key>
-			<false/>
+			<true/>
 			<key>ShowPicker</key>
 			<true/>
 			<key>TakeoffDelay</key>
@@ -1551,9 +1551,9 @@
 		<key>Security</key>
 		<dict>
 			<key>AllowNvramReset</key>
-			<false/>
+			<true/>
 			<key>AllowSetDefault</key>
-			<false/>
+			<true/>
 			<key>ApECID</key>
 			<integer>0</integer>
 			<key>AuthRestart</key>
@@ -1573,7 +1573,7 @@
 			<key>PasswordSalt</key>
 			<data></data>
 			<key>ScanPolicy</key>
-			<integer>17760515</integer>
+			<integer>0</integer>
 			<key>SecureBootModel</key>
 			<string>Default</string>
 			<key>Vault</key>