The H20/H21 have a new release version 0x4062. Here are the improvement notes:
H20-100 released 4/2
H20-600 released 3/25
H21-100 released 3/24
Video Stability
System Stability
New OSD for viewing HD channels in non-HD resolution
HD output behavior improvement
Minor UI polishes for Signal Meter
Left arrow behavior polish
Interactive channel stability
“Under-the-hood” improvements
Significant HDCP Improvements
Modem behavior
Improved ATSC guide data reliabiity
Option to disable guide UI scrolling
H20-100 released 4/2
H20-600 released 3/25
H21-100 released 3/24
Video Stability
System Stability
New OSD for viewing HD channels in non-HD resolution
HD output behavior improvement
Minor UI polishes for Signal Meter
Left arrow behavior polish
Interactive channel stability
“Under-the-hood” improvements
Significant HDCP Improvements
Modem behavior
Improved ATSC guide data reliabiity
Option to disable guide UI scrolling