Toshiba 46TL938G loses WLan configuration after shut down

Hello,
46TL938G unpacked yesterday, upgraded firmware from Internet.
Wireless set up with WPS works, but configuration is lost after turning the TV off/ back on.
I cannot use assisted configuration because of hidden SSID.
In manual mode I always get information about improper autorhization and/or unsupported encryption. Access point uses WPA2-PSK AES.
Is there any way to make WPS setting stick??

Any news?
I would recommend you to try different configuration scenarios:
- try password which are no longer than 8-10 characters.
- try different encryptions: WPE / WPA-PSK / WPA2-PSK (AES, TKIP or AES and TKIP)
- try to connect with Pre-Authentication ON and OFF
- try to connect to WLan using option Hidden Network - enabled or disabled

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Toshiba 46TL938G loses WLan configuration after shut down

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