How to flash broadcom 57810 fw under Windows/Linux

How to flash broadcom 57810 fw under Windows/Linux

1.Download fw update utility "winfwnx2.exe"
2.Execue winfwnx2
3.dir (Check current fw version)
4.q
5.winfwnx2.exe -all restorenvram "xxx.bin"
6.Waiting about 10 minutes to complete.

Linux: lnxfwnx2 -all restorenvram "xxx.bin"