To unlock mio 269 you don't need anything but the stylus.
Just push the resetbutton with the stylus .
than quickly push the volume button up all the way,( the one on the left side above the ON/OFF button)
simultanius with the the button on the right side the second from the top (the one with the flag on it).
And waite a few seconds there will be a little screen saying" clean all data in my flash disk" press NO, then you will see another screen saying" no DM found in HDD and SDMMC" just push OK.
Now your mio is unlocked.
Now you can push on the bottom of your screen and the taskbar will appear

Interesting. And without software also.

I don't think this method survives a reboot though.

No it wount.
But you can do it over and over again lol

I'd prefer a permanent unlock myself lol

FWIW, me too!