Thanks for advice, just downgraded SW to 2B07, then to 2B06 - USSD don't work. I don't know what to do further... All worked before, what's the matter?..hope this helps... done that also with 2B06 / 2B07
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A-a-a-a!!! It was fault of SIM card! Just inserted other simcard and USSD working good. Sorry
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