for ET9x00 both ways are ok either via online update or via fresh flash
if fresh flash then follow pheonix advice above
opkg remove kernel-module-rtl8192cu --force-depends
opkg upgrade
shutdown -r now
Login via telnet into ur box and run these commands in this order
Code:opkg remove kernel-module-rtl8192cu --force-depends
Code:opkg upgrade
Code:shutdown -r now
Last command will make thr box reboot, when it cones back on hopefully all should be ok