[OpenBIOS] on omnibook xe3

[pi]

hello list,

i want to reflash my omnibook xe3 (PhoenixBios)
i never flashed bioses before and don't want to lose the machine
so some questions

i)   is there the possibilety to copy the current "image"
ii)  if the flash failes is there any way to get the machine running
again
iii) how much time will this take me?
     (middle range linuxguy / programmer -- since debian 1.3.6)

thanks a lot

pi