ftp.ntua.gr:/debian/dists/Debian9.13/main/installer-armhf/20170615/images/u-boot/Firefly-RK3288/?C=N&O=A 
Icon  Name                                                                  Last modified      Size  
[DIR] Parent Directory                                                                           -   
[   ] Firefly-RK3288.sdcard.img.gz                                          15-Jun-2017 11:34  208K  
[   ] u-boot-spl.rksd.gz                                                    15-Jun-2017 11:34   17K  
[   ] u-boot.img.gz                                                         15-Jun-2017 11:34  191K
Apache/2.2 Server at ftp.ntua.gr Port 80