ftp.ntua.gr:/debian/dists/unstable/main/installer-armhf/20210606/images/u-boot/Firefly-RK3288/ 
Icon  Name                                                                Last modified      Size  
[DIR] Parent Directory                                                                         -   
[   ] Firefly-RK3288.sdcard.img.gz                                        06-Jun-2021 14:48  315K  
[   ] idbloader.img.gz                                                    06-Jun-2021 14:48   32K  
[   ] u-boot.img.gz                                                       06-Jun-2021 14:48  273K
Apache/2.2 Server at debian.noc.ntua.gr Port 80