This fix is different than "quote from top of post"
"Note: this should not be confused with the silent ringer problem which is a known issue with SPB products such as SPB Mobile Shell or SPB Phone Suite, see this thread for details and a solution to that problem."
That is what the Palm update address. This update i believe is to allow your phone to receive\ answer calls when you have low signal. Whereas if you dont perform this tweak these low signal calls would go to voice mail and not even ring your phone.
please correct me if i am wrong.... ne way ne one know where to get that updated .net 3.5 framework cab