ftp.ntua.gr:/debian/dists/bullseye/main/installer-arm64/20210731+deb11u3/images/u-boot/?C=S&O=D 
Icon  Name                                                                 Last modified      Size  
[DIR] Parent Directory                                                                          -   
[   ] rock-pi-4-rk3399.img.gz                                              22-Mar-2022 19:37  496K  
[   ] pinebook-pro-rk3399.img.gz                                           22-Mar-2022 19:37  492K  
[   ] rockpro64-rk3399.img.gz                                              22-Mar-2022 19:37  489K  
[   ] puma-rk3399.img.gz                                                   22-Mar-2022 19:37  474K  
[   ] firefly-rk3399.img.gz                                                22-Mar-2022 19:37  459K  
[   ] rock64-rk3328.img.gz                                                 22-Mar-2022 19:37  403K  
[   ] pine64_plus.img.gz                                                   22-Mar-2022 19:37  346K  
[   ] pinebook.img.gz                                                      22-Mar-2022 19:37  342K  
[   ] a64-olinuxino.img.gz                                                 22-Mar-2022 19:37  337K  
[   ] teres_i.img.gz                                                       22-Mar-2022 19:37  336K  
[   ] orangepi_zero_plus2.img.gz                                           22-Mar-2022 19:37  327K  
[   ] nanopi_neo2.img.gz                                                   22-Mar-2022 19:37  327K
Apache/2.2 Server at debian.noc.ntua.gr Port 80