Hello Stefan,
Thanks for explaining what the letters mean and why my writes are usually so quick! I've done full chip writes, they all went well. The reports are identical to the one attached with only minor differences in delay loop calculations. Except on one occasion, when flashrom correctly identified a pre-erased block: Erasing and writing flash chip... Trying erase function 0... 0x000000-0x00ffff:EW, 0x010000-0x01ffff:EW, 0x020000-0x02ffff:W, 0x030000-0x03ffff:EW, 0x040000-0x04ffff:EW, 0x050000-0x05ffff:EW, 0x060000-0x06ffff:EW, 0x070000-0x07ffff:EW
Cheers, Nikita