Cisco 79x1 phone firmware


did anyone manage to get Cisco 7941 or 7961 phone fully working with SIP firmware newer than 8.4.2?

Latest firmware is 9.3.1SR2, and with that one, I manage to register with asterisk, take calls, but soft key Dial is not working. This is also the case with firmares 9.3.1SR1, 9.3.1, 9.2.3, 9.2.1SR2, 8.5.4, 8.5.2.

Any help appreciated.