Can't write or Erase on Abit IC7

[Anders Jenbo]

Hi, i'm trying to use a Abit IC7 to cross flash the BIOS for another
board but neither erase or wirte works.
The chips that i am trying to flash is a SST SST49LF004A, I am able to
read it's content just fine.

Any ideas what might be the issue here?

-Anders