Never try on this firmware, i can't help you, just be sure to folow the procedure when installing cubeitmod. Otherwise upgrade your printer.
After you can do this:
After installing cubeitmod
1 - open a small cube or cylinder (like 20*20*20 mm) (it like the second cause i can watch the PS for M227/228)
2 - measure your filament diameter in several points and put the average in the material tab (name it by material/layer thickness, ex: PLA-Cubex-0.1mm)
3 - Still in the material tab, start with a flow tweak to 1, For the M227/M228 (seam effect) look on the forum or start with Giovanni values.
4 - Setup the basical function for the calibration in the style tab (1loop, 0 skin thickness, 0 jitter, extrusion&infill width to 0.5 and your layer height, infill to hollow, wipe off)
5 - Slice/Save and print your test
6 - Print finish : measure the only loop print, if its less than 0.5 mm increase the flow tweak by 0.02 per 0.1 mm if it's more i think you understand... Re-print with the new value and check if your thickness is right.
7 - Look at the seam, you can have a "flat" seam when playing with the M227/228, i made some repport on 0.1 mm layer height : https://docs.google.com/spreadsheets/d/1WgGEOTtXixm_hI-uub_aQnoXUR1mZRT1FbxexAzdgUc/edit?usp=sharing
8 - After this try some print to check the surface aspect. 100 % on the solid box is a good value if your printer is not offset.
After it's better to try with some small models that you can find on thingiverse, just seach with calibration in keyword.
Hope it's help !
Now when I try to print a .bfb file I get a puddle of filament and then the error "Filament Flow Fail" on the Cubex. If I load a .cubex file or a .bfb that someone else prepared, it works fine. I'm using the instructions Giovanni included with CubeItMod v4.0. I'm sure it is an issue with the .ini files. It's now a week mucking around with this and I still cannot get a decent print from KiSSlicer. No, not even one! I cannot believe that nobody has posted a working set of .ini files to use as a baseline. Will somebody PLEASE upload a working set of .ini files? I can tweak from there.