Is there an SM changer 1.12? I've seen 1.10, 1.11, and 1.13 now...
For those who are interested, I've been messing with these dev titles since Wednesday, and here's some info on them (not sure how much of this has been posted already).
SM changer disc v1.13 installs the following during a menu change: disc check, uninstaller, mii channel, IOS4 v3 (don't know why), IOS9 v516 (for Disc Chk and uninstaller), IOS31 v2576 (for Mii and EULA), EULA v2, SM IOS, and SM. It will run from USB if ISO is re-encrypted, but fails during install because the wads are RVT-key encrypted.
The channels: The disc check works fine. If you install the cIOS9 from CORP, it should be able to check DVD-Rs. The Menu Uninstaller...tested on SNEEK, and got a bricked wii. Not surprising. Both channels use IOS9.
The text-based NDEV menu also runs fine on retail consoles if you repack the wad. NDEV will load retail discs without issue (tested with Wii Sports and Pokemon Battle Rev). The NDEV SM uses IOS55.