Bios flashing gone wrong (Ubuntu Karmic) - help please

When attempting to flash a new version of a Bios on a Compaq Evo D510 e-pc, toreplace the old jk0101.rom, I got an error message

What can I do now ?

Thank you for your help.

anne@anne-desktop:~$ sudo flashrom -w jk0105.rom
flashrom v0.9.1-r706
No coreboot table found.
Found chipset "Intel ICH4/ICH4-L", enabling flash write... OK.
This chipset supports the following protocols: Non-SPI.
Calibrating delay loop... OK.
Found chip "SST SST49LF004A/B" (512 KB, FWH) at physical address 0xfff80000.
jk0105.rom: No such file or directory
anne@anne-desktop:~$ sudo flashrom -w jk0105.rom
flashrom v0.9.1-r706
No coreboot table found.
Found chipset "Intel ICH4/ICH4-L", enabling flash write... OK.
This chipset supports the following protocols: Non-SPI.
Calibrating delay loop... OK.
Found chip "SST SST49LF004A/B" (512 KB, FWH) at physical address 0xfff80000.
Flash image seems to be a legacy BIOS. Disabling checks.
Writing flash chip... ERASE FAILED at 0x000100f7! Expected=0xff, Read=0x28, failed byte count from 0x00010000-0x0001ffff: 0xfde7
ERASE FAILED!
ERASE FAILED!
ERASE FAILED!
ERASE FAILED!
FAILED!
Your flash chip is in an unknown state.
Get help on IRC at irc.freenode.net channel #flashrom or
mail [e-mail]
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DO NOT REBOOT OR POWEROFF!

Michel Guesdon
[e-mail]