ftp.ntua.gr:/debian/dists/sid/main/installer-arm64/20190410/images/u-boot/?C=N&O=D 
Icon  Name                                                    Last modified      Size  
[DIR] Parent Directory                                                             -   
[   ] pinebook.img.gz                                         10-Apr-2019 21:55  301K  
[   ] pine64_plus.img.gz                                      10-Apr-2019 21:55  298K
Apache/2.2 Server at debian.noc.ntua.gr Port 80