ftp.ntua.gr:/debian/dists/sid/main/installer-armhf/20200314/images/u-boot/Firefly-RK3288/?C=N&O=D 
Icon  Name                                                           Last modified      Size  
[DIR] Parent Directory                                                                    -   
[   ] u-boot.bin.gz                                                  14-Mar-2020 09:16  268K  
[   ] u-boot-tpl-spl.rksd.gz                                         14-Mar-2020 09:16   32K  
[   ] Firefly-RK3288.sdcard.img.gz                                   14-Mar-2020 09:16  308K
Apache/2.2 Server at debian.noc.ntua.gr Port 80