Just read at Buzzdev there is a program for unlocking the extended rom for version 2.XX of the wizard.

Could be intresting for tweaking a bit more.
origenal post is here : Forum post

Link to the file

- unpack
- copy it over to your device
- run it

This will make your ExtendedROM writable, NOT visible.
Sometimes, files in ExtendedROM are marked as READONLY and you have to clear that bit.

Use TotalCommander CE to display content of your ExtendedROM for now.