ftp.ntua.gr:/debian/dists/bullseye-proposed-updates/main/installer-armhf/20210731+deb11u7/images/u-boot/Firefly-RK3288/?C=M&O=D 
Icon  Name                                                                                         Last modified      Size  
[DIR] Parent Directory                                                                                                  -   
[   ] u-boot.img.gz                                                                                15-Dec-2022 05:37  273K  
[   ] idbloader.img.gz                                                                             15-Dec-2022 05:37   32K  
[   ] Firefly-RK3288.sdcard.img.gz                                                                 15-Dec-2022 05:37  315K
Apache/2.2 Server at debian.noc.ntua.gr Port 80