Hi Stefan,
Yes, I can confirm that flashrom v0.9.5.2 works. I successfully tested all operations: Read, Erase and Write. I used OEM flash image version 3.10 from ASRock's website. Filename: '890GXE3.10'. The flash chip was W25Q080BV.
Thanks, Svetoslav Trochev.
P.S. I am not attaching output logs, but I have them and if there is an interest I can send them at any time.