Shading of the polygons are weird

[Anonymous]

Hi everyone!
I faced with a weird shading problem in one of my objects which you can see in the attached picture. When I export the model into Substance painter the same problem appears there. You can download the obj file here (https://drive.google.com/file/d/1qngvlIeAryt9LYzgv2tRHbjrP1v22A2E/view) in case you want to see if you can find the problem. Thank you.

I already tried:

Editnormal (unify, break, reset)
Smooth group has just one group
UVmap is totally ok
There are no flipped faces

[Anonymous · Accepted solution]

You might want to reset the normals and return them to unspecified state.

1. Apply an Edit Normals modifier
2. Got to Normals subobject
3. Select all normals (Strg+A)
4. Hit reset.

Edit: Just saw that you tried this already. Please try again since it worked here for me.

[Anonymous]

Thanks a lot. It seems I used the normal modifier in a wrong way. Following your steps the problem solved. Thanks again.