how to hack efs canon lens (55-250 is) to being compatible with speedbooster on m4/3

Hi guys, how are you?. I was looking for a tele lens be did not want to spend a lot for this. I choose a efs canon lens (efs 55-250is) because it was so cheap (89 €, on eglobal) and it has internal stabilizzation, and I can tell you something works really good. But to use it with speedbooster (in my case viltrox ef-m2) you need to mod the lens, nothing too difficult. For me the quality is really good for photographer and videomaker, in the end for 89€ you can have a 400mm