We're excited to release a G400 firmware for use with the recently released sixth preview of TinyCLR OS. It uses the exact same libraries and extension so all you have to do to get started is update the bootloader on your G400 then flash the new 0.6.0 firmware. For help on updating the bootloader on your G400, take a look at our new docs.
To go along with this release, we're also providing an ARM9 build of the TinyCLR OS Core. It can be found in the existing 0.6.0 release on our TinyCLR ports repo.
With this release, all of our currently in-production systems can be used with TinyCLR OS once more.