Bild.tar

CYGWIN Unpacking TWRP Backup Files
Thanks @Optikmike for CYGWIN tip

here's what I did..

CYGWIN Unpacking TWRP Backup Files

rename:
data.ext4.win to data.ext4.win.tar
system.ext4.win000 system.ext4.win000.tar
system.ext4.win001 to system.ext4.win001.tar

Make a directory in your CYGWIN Home [Username]folder
Example: untar

Use Windows File Explorer go to your CYGWING Home
C:\cygwin\home\carl (your user name will be here)
make any folder you choose
Example:
C:\cygwin\home\carl\untar
and C:\cygwin\home\carl\untar\data ( for data files)

put your renamed data files in a folder named data
C:\cygwin\home\carl\untar\data (this is to keep files separate when unpacked)

While in Explorer put your renamed system files in untar folder

start CYGWIN ( Use the Cygwin Terminal and then you can copy and paste these commands)
cd to untar folder
example:
cd\untar
do these commands one at a time, it will extract to a folder named system

tar -xvf system.ext4.win000.tar
tar -xvf system.ext4.win001.tar

cd to data

do this command
tar -xvf data.ext4.win.tar