I am currently running 6.3 build 1967 on one SURF and 6.2.1 build 1757 on the other one. I have had nothing but trouble with the box running 6.3 with it dropping the WAN connection and even though I have logged a trouble ticket I have not received any satisfactory answers.
Given that my second SURF seems to be stable, I would like to downgrade the firmware of the one running 6.3. Can you please point me to the 6.2.1 build 1657 image?