I got it April 14th around 3 AM as well. Not Happy about it. I had 3 black screen reboot events in 24 hours on the 15th. 2 black screen reboot events on the Sunday, the 16th. Not sure it's the new update, since I've had a black screen reboot occur a couple of times before over the last few weeks plus yesterday. That's 3 Sundays during the last hour of Prime Time recording which ruined the PTAT programs I wanted to archive to an EHD. May be an OTA module related problem, since I have a Hearst channel in dispute and had to start using the OTA module to record that channel which is ABC local channel 7 (007-01 OTA). I had not been using the OTA module before the Hearst dispute.
I'm going to update to the new CUI in hopes that it is better than what I've got now. If that doesn't work, they will send a replacement receiver.