ftp.ntua.gr:/debian/dists/sid/main/installer-armhf/20210415/images/u-boot/Firefly-RK3288/?C=M&O=A 
Icon  Name                                                           Last modified      Size  
[DIR] Parent Directory                                                                    -   
[   ] Firefly-RK3288.sdcard.img.gz                                   15-Apr-2021 01:06  315K  
[   ] idbloader.img.gz                                               15-Apr-2021 01:06   32K  
[   ] u-boot.img.gz                                                  15-Apr-2021 01:06  273K
Apache/2.2 Server at debian.noc.ntua.gr Port 80