I noticed the Adtran site no longer contains Archived releases of older version firmware. What is a stable recommended production release for the Total Access 904 2nd Gen currently available from your site?
We still have all of our current and archived software on our website. The Current Extended Maintenance Release is the recommended firmware to use.
If you go to the product you want in support forums, then you will see a link in the left column for the software.
I have added it below for you:
Let me know if you need anything else.