Start by downloading the Bash Bunny updater for your host OS – Windows 32/64, Linux 32/64 and Mac versions are available. Connect your Bash Bunny to your computer in arming mode. Extract the contents of the downloaded ZIP file to the root of the Bash Bunny’s flash storage.
For example, on Windows if the Bash Bunny is located at d:\ it should now contain the file d:\bunnyupdater.exe