Looks like L2.59 has been replaced with L2.90 for 522/625. Mine are still L2.55
http://rweb.echostar.com/departmental_content/TechPortal/content/tech/TechUpdates.shtml
01/13/2006: 1110 Software Version L2.90 for DVR 625
Effective Friday, January 13th, Engineering has spooled a PARTIAL PHASE of software version L2.90 for the DVR 625 receiver. This is primarily a non-forced maintenance release available at ALL satellite locations.
At this time L2.58 and L2.90 will be valid software versions for the DVR 625
...
At this time L2.55 and L2.90 will be valid software versions for the DVR 522
http://rweb.echostar.com/departmental_content/TechPortal/content/tech/TechUpdates.shtml
01/13/2006: 1110 Software Version L2.90 for DVR 625
Effective Friday, January 13th, Engineering has spooled a PARTIAL PHASE of software version L2.90 for the DVR 625 receiver. This is primarily a non-forced maintenance release available at ALL satellite locations.
At this time L2.58 and L2.90 will be valid software versions for the DVR 625
...
At this time L2.55 and L2.90 will be valid software versions for the DVR 522