Just to be sure, you have flashed the box with 1.03.01-wdlxtv-0.5.8.1, right ?
And you know that even when you have flashed the box with wdlxtv firmware, you still can't use any wireless dongles without an app.bin, right ?
The latest firmware for the gen1 only adds wired (i.e. usb-to-ethernet) support for several chipsets !
1.03.01-WDLXTV 0.5.8.1 + Cylent ShowcaseV2 Mod + pure-ftpd + nfs