Problem: Cannot restore stock Rom

Hello guys,

after flashing and using several custom Roms and Kernels, I wanted to restore the phone to its original state. The problem is, that Samsung Smart switch recognizes my Galaxy S6 as a Galaxy S6 edge.
I already downloaded and successfully flashed the stock ROM (G920FXXU2COH2_G920FDBT2COH2_G920FXXU2COH2_HOME) which worked but Smart Switch still recognizes it as an Edge.

Thanks for your help in advance and greetings from Germany.

dePadre