After figuring out why a Symbol MC50 does not work with WPA-PSK (TKIP), it turns out that most of the pocket pcs do not work with it.
My HTC with Window Mobile 6 does not work with it.
I have found a client for Symbol MC50 to make it work with WPA-PSK (TKIP). It is called 'Aegis client'.
You can download it here:
https://docs.symbol.com/KanisaPlatform/Publishing/37/10411_f.html
And here is the license:
License ID: 62549151
License Key: 9D71CCB4BDF5E7C51D358F9EDE42A21296809778
