ftp.ntua.gr:/debian/dists/unstable/main/installer-arm64/20190118/images/u-boot/?C=N&O=A 
Icon  Name                                                         Last modified      Size  
[DIR] Parent Directory                                                                  -   
[   ] pine64_plus.img.gz                                           18-Jan-2019 22:43  298K  
[   ] pinebook.img.gz                                              18-Jan-2019 22:43  301K
Apache/2.2 Server at ftp.grnet.gr Port 80