ftp.ntua.gr:/debian/dists/unstable/main/installer-armhf/20210731/images/hd-media/?C=S&O=A 
Icon  Name                                                         Last modified      Size  
[DIR] Parent Directory                                                                  -   
[DIR] SD-card-images/                                              31-Jul-2021 07:20    -   
[   ] boot.scr                                                     31-Jul-2021 07:20  1.5K  
[   ] vmlinuz                                                      31-Jul-2021 07:20  4.7M  
[   ] initrd.gz                                                    31-Jul-2021 07:20   15M  
[   ] hd-media.tar.gz                                              31-Jul-2021 07:20   24M
Apache/2.2 Server at debian.noc.ntua.gr Port 80