11.2 Native FIRM works just fine on the latest skeith build! I need to test the Stable build.Check in the NATIVE_FIRM directory in your CTRNAND. To be more precise, use GM9 or FBI to browse your CTRNAND and go to title/00040138/00000001/ and check the .app file. Its name is the current version.
Then, download the file from http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013800000002/<insert numbers here without the .app extension>
For example, for 11.0 its http://nus.cdn.c.shop.nintendowifi.net/ccs/download/0004013800000002/00000052.