Some specialized survey equipment retailers and technical support sites, such as Precision Geosystems , maintain archives of free utilities and older software versions like Leica Geo Office v4.0 for their clients.
: Downloading measurements from instruments and uploading coordinate data or code lists. Leica Survey Office 2.21 English Download UPD
Version 2.21 typically supports older generations of Leica equipment, including: such as Precision Geosystems