For some purposes (e.g. to flash a new software-image from USB to microSD) it is useful or neccessary to use the OpenVario Recovery Tool. This can be achieved by the following steps:
All files needed for updating the OpenVario can be downloaded at the FTP-server:
ftp://ftp.openvario.org/
OpenVario Recovery Tool Main Menu
Select Update Method
Back to OV-Menu
Back to Write Image to microSD