Loadvisk has nothing to do with extended memory, it creates a virtual disk of your Program RAM (see 'Memory' on you PDA). This shows as a folder called 'shared' in Windows, when you copy files to this folder, the look at your memory, you will see that it stores in your program section of your memory and so I wouldn't bother with it.
I have had a good look around and I can find nothing to unlock the true extended memory, only the tool you used to unhide it.
You can flash your extended memory with the 2577 method, but this is not ideal for users who just wnat to access and write to ext memory.
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