For those who has not done an upgrade of the ROM and do not wish to do it because of SMS issue, this may be the solution. It is the third time that HTC has issue an SMS function update since the launch of HTC HD2. Many has lost hope that HTC is able to reliably solve the problem. I am one of them. I have missed important SMSes that may be caused by this hiccup. Nevertheless, you can upgrade the ROM or stay with it and install the SMS update.