Hello,
First thank you a lot for your amazing work on flashrom, I just discovered this software and it saved me a lot of time lately !
I use it to flash a MT25QU256 through a FTDI4233H, and as software is telling me that this chip is labelled as untested I would like to send you the logs showing that it works indeed.
Here are logs for both reading and writing / erasing.
I also did varius tests, filling the EEPROM with arbitrary values and reading back to see everything was working.
Please do not hesitate if you need more details !
Best regards,