The earliest version of C-DiGit embedded firmware you should use is 1.0.19.

You do not need to update to version 1.1.4 unless you are having difficulty connecting your C-DiGit to a network. To upgrade embedded firmware, please contact technical support.

C-DiGit Embedded Firmware Compatibility
Application Software* Recommended
Image Studio 5.x 1.1.4
Image Studio 4.0 1.1.4
Image Studio 3.1 1.0.19