Answer
In the Regulatory Tools package you receive there are many files. The filename structure is:
{radio-type}-{toolchain}-{version}.tar.bz2
For example, the file mfg60n-arm-eabihf-10.135.0.6.tar.bz2
would be for our 60 Series radio running on a system with a GNU Embedded Application Binary Interface (High Float) running version 10.135.0.6 of the Laird firmware.
An easy way to determine your toolchain is to use the command:
ls -l /ld-linux*