Please see the report below. I've tried flashing 2 eproms but get the same result.
Calibrating delay loop... OK. Found Macronix flash chip "MX25U6435E/F" (8192 kB, SPI) on ch341a_spi. Reading old flash chip contents... done. Erasing and writing flash chip... Erase/write done. Verifying flash... FAILED at 0x00000010! Expected=0x5a, Found=0x5b, failed byte count from 0x00000000-0x007fffff: 0x332be2 Your flash chip is in an unknown state. Please report this on IRC at chat.freenode.net (channel #flashrom) or mail email@example.com, thanks!