Hi,
The verbose flashrom log you provided helped me track down the problem. Sometimes, the SB700 SPI controller only retrieves 2 bytes of flash chip ID instead of 3 bytes. Please keep the logs available so others can analyze them as well. Thanks.
This will be done.
I know someone who can reproduce the bug. Once the bug is fixed, I'll send you another mail.
Feel free to send me patches to test (for probing and read operations only :)
Regards.