v 1.3 can be downloaded and installed via autostar updater v5.9.1 only. you cant drag and drop. Also the ETX-LS uses miniSD not SD so I hope you used the correct one.
The software can be downloaded from
www.meade.com from a newly posted link on their home page.
It takes awhile to prepair the card so dont rush - its a 200mb download that downloads, instals and then verifies itself.
Ignore the 'switch to Mysky" button for now - that will prepair the card for updating the database of objects. All the basic objects are installed with 1.3 (or 13 as it appears in teh list).