Our ZENO flash loader is what is needed for mass programming. Customers can integrate the code into their test tool. Or they may create their own board with multiple sockets to mass program the chips. These are the ways that our customers have approached mass programming of these modules since the product was launched.
Typically it takes 12 seconds to flash and can be done in parallel.
The Zeno distribution package on the product page Design Resources tab contains the Zeno Flash loader related files. Here is the path from the zip download ZENO_Package_MMDDYYYY\Software\ZENO Flash Loader.