Here are the release notes for version L4.03 on the ViP622:
* Fixes slow channel change on a small subset of customer installs - this was in L402 as well.
* Fixes receiver reset problem on a small subset of customer installs with 61.5 satellite.
* Fixes a problem whereby the transponder and satellite in the point dish menu would be reported incorrectly - this was in L402 as well.
* Improve Search function for channels that are locked (and hidden) - this was in L402 as well.