Here is the output:
chronos@localhost /tmp $ sudo flashrom -w coreboot-seabios-samus-20160324-coolstar.rom flashrom v0.9.4 : df00e76 : Mar 22 2016 19:53:33 UTC on Linux 3.14.0 (x86_64), built with libpci 3.1.10, GCC 4.9.x-google 20150123 (prerelease), little endian Erasing and writing flash chip... Transaction error! spi_block_erase_20 failed during command execution at address 0x3e0000 ERASE FAILED! Reading current flash chip contents... spi_block_erase_52 failed during command execution at address 0x3e0000 ERASE FAILED! Reading current flash chip contents... Transaction error! spi_block_erase_d8 failed during command execution at address 0x3e0000 ERASE FAILED! Reading current flash chip contents... spi_chip_erase_60 failed during command execution ERASE FAILED! Reading current flash chip contents... spi_chip_erase_c7 failed during command execution ERASE FAILED! FAILED! Uh oh. Erase/write failed. Checking if anything changed. Good. It seems nothing was changed. Writing to the flash chip apparently didn't do anything. This means we have to add special support for your board, programmer or flash chip. Please report this on IRC at irc.freenode.net (channel #flashrom) or mail flashrom@flashrom.org! ------------------------------------------------------------------------------- You may now reboot or simply leave the machine running. FAILED
If you need more info, please let me know.
cheers
Richard ᐧ