While installing the module one can get error due to the architecture mismatch:
You have three choices:
1) Boot from flash, ipkg install the files there (do not ipkg update, download the files and ipkg install specific files), copy the modules to the disk, reboot back into Debian.
2) Ignore the dependency errors (which are to be expected if you are installing SlugOS packages when running from a Debian rootfs) and force the installation.
3) Unpack the .ipk files manually, copy the files into place, and run depmod manually.