Cisco 79x1 phone firmware

Hello,

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.

T