1. install designx 2019.0.2 and Don't apply the crack
2. Overwrite 2019.0.2 Magnitude crack (rfutility.dll and 3ds.dll) in the bin folder.
3. Run designx 2019.0.1 and you see the sentence "Your maintenance will expire in ...days"
4. Close the program. and Run designx again. the sentence doesn't appear. 

Result
1. Chamfer works well
2. F/O upgraded. you can import stl, obj,....etc