Hi,
 
I got that while using J. Lewis script to flash an HP Chromebook 14 (Falco) (without screw).
 
flashrom v0.9.4  : 14ce0cf : Oct 09 2013 22:16:28 UTC on Linux 3.15.10-200.fc20.x86_64 (x86_64), built with libpci 3.1.10, GCC 4.7.x-google 20130114 (prerelease), little endian
Erasing and writing flash chip... spi_block_erase_20 failed during command execution at address 0x0
Verifying flash... VERIFY FAILED at 0x00000062! Expected=0xff, Read=0x0b, failed byte count from 0x00000000-0x007fffff: 0x4
Your flash chip is in an unknown state.
Get help on IRC at irc.freenode.net (channel #flashrom) or
mail flashrom@flashrom.org with FAILED: your board name in the subject line!
-------------------------------------------------------------------------------
DO NOT REBOOT OR POWEROFF!
FAILED
 
Can you help ?
 
Thanks,
R.