Exporting GPS to John Deere 2600 or 2630 is only capable with the Outback S, S2, S-lite, Sts, and S3.
The reason the Max, STX, and Rebel cannot export GPS corrections to a John Deere 2600 or 2630 is the number of decimal places John Deere requires for correction.
To change the decimal places please contact your local Outback Dealer or Customer Service for assistance.