Here are the Release Notes for Hexabitz firmware released on GitHub. There are three easy methods to get pre-compiled firmware HEX files for the release you want, without cloning and compiling the firmware:

• Navigate to module website page, Resources tab and download HEX files for latest firmware release.
• Visit module firmware repository on GitHub and click on Releases, recent releases should show up with their associated HEX files.
• Visit module firmware repository on GitHub and navigate to the Compiled folder within the code. The folder contains HEX files for current and previous releases. Simply copy the release you want if you have a local copy. If you are browsing the repository online, click on the HEX file then, click on Raw to display and download the file.