Hidden settings for 937CD radio

Does anybody know if the radio in my Alfa GT has any hidden features, and if so, how do I access them? For example, I would love to change the default volume that always resets back to 20.

Radio model number is ALFA 937CD MP3.

Thanks!

Is it the BOSE version? This thread may be of interest.

Thanks for the link! Yes, I do have the BOSE version, and from that article, it seems like I am stuck with the default volume level of 20.

If anybody has a workaround, please let us know!