Once a user who requires a manual update via an update.zip file on an SD card completes the upgrade successfully, they need to delete that file off from the SD card. Any file named update.zip, placed in the root of an SD card, will prevent an eDGe from updating its software successfully in the future.

It does not matter if you have migrated your library to the SD card or not. This is the expected behavior. Distribution of update.zip files for manual upgrades was not originally intended and we are only doing so to help out customers who have had upgrade issues.

enTourage ONLY supports upgrading, NOT downgrading. If you have saved off an update.zip of a previous version of software please do not assume you can roll back to that release whenever you want. There are many reasons for this but one example is database handling. If we add a new column to a database, we can put support in for adding that column and the logic to handle it in an upgrade. However, if we then downgrade that eDGe to a release which doesn't understand that new column, we will have unexpected results.