Sure I can, but it's fiddly and tricky. There is no good summary which steps are required. I can share you my pixel related stuff and you can ask me questions.
I'm trying to flash a W25Q64FV spi-chip (Google Chromebook Pixel) with flashrom (version 0.9.7-r1711) and buspirate v4 (firmware 6.2-beta1 r1981). It doesn't work. Flashrom is unable to find the spi-chip. Is BP v4 supported?