Help: Dump Insyde Bios with InsydeFlashx64

Hello,

i have a problem to dump and backup my current bios!
i extract the Original Acer Bios file with 7zip and change
the platform.ini file.

[BackupROM]
Flag=1
FilePath=
FileName=

When i start the InsydeFlashx64.exe an error occured thats no bios file is included!
(only files from image are extracted by 7zip)

The original packed file is 7mb and the unpacked files only 4mb
and no *.rom, *.fd, *.bin is included in extracted file
where can i find the new bios file and how can i backup my current
insyde bios?