Caveat:
I searched for "firmware" and only got three results which were non-irrelevant.

Who makes the OEM radio for the 2010 Silverado (non Bose branded)' is it Delco or is that now Delphi or someone else?

Are there firmware flashe upgrades available for these radios via the USB port (or perhaps Tech II)?

The reason I ask is the way the units uses compressed music is cumbersome. It can play both MP3 and WMA files and here is what I have questions on.

1 - When I have .wma files on a CD-R, the main radio body (aka head unit) will not sort my Albums, it said there are none and when you press the "i" info button on the top left of the head unit when I file is playing, all you see is the artist name and song. It will sort my Artist though.

2 - When I play a .wma file from the USB port via a USB Flash Drive (aka thumb dive or Jump drive), the 'i' button does show the album name, however there is no sort feature that I can find like when the file is played off the CD reader. I plan to try to add a 64GB Solid State USB drive to this port in time.

3 - The "Cat" button is only for XM, why can't that be a hot button for Album, Artist, Genre year and so on?

Note: I have not use .mp3 files yet and will try that next.

4 - When playing off the USB port, when you go back to that input you have soft buttons for "pause", "shuffle" (by both folder or song) and repeat. How do you get back to this root menu w/o switching through the source button?

5 - Is there some forum somewhere where you can talk/post to the radio's software people; like a GM.com form or a Delco.com forum? I assume with this being a mainstream truck (GM) that there has to be firmware releases from time to time. I assume that you can take your truck to the dealer and the tech can flash to the newer firmware if need be (i.e. You have a 2009 and you want the 2010 features and your hardware can support it). Does the GM tech use Tech II to flash the firmware, they use a USB port or nothing like this exists?

TIA, Matt