Comment 15 for bug 222174

Since Acer tells you nothing about why Vista needs a new BIOS, it is impossible to tell whether it would help your problem, or not.

The warning is a general one. If a BIOS reflashing goes wrong, the motherboard may be bricked. On the other hand, I have done this operation many times and it has never gone wrong.

Yes, using the ">>" adds the output of a second command to the end of the file. That usage is standard for Unix, which Linux has copied.