I have the OS 2.1u just delivered this wk and I am having this same problem. I got to pass from detecting uSD to network connections by inserting a uSD. I know in previous post of this forum it says it should not be required, so not sure if this is a result of a new firmware update. After it connects to the network, I took the SD out, but on power loss, it will look for the uSD again, so ended leaving it in there.