ftp.ntua.gr:/debian/dists/Debian8.11/main/installer-armhf/current/images/u-boot/BananaPi/?C=N&O=D 
Icon  Name                                                                 Last modified      Size  
[DIR] Parent Directory                                                                          -   
[   ] u-boot-sunxi-with-spl.bin.gz                                         19-Jun-2018 12:19  158K  
[   ] BananaPi.sdcard.img.gz                                               19-Jun-2018 12:19  157K
Apache/2.2 Server at ftp.grnet.gr Port 80