I get this: server returned error: HTTP/1.1 400 Bad Request

dm900 login: root
login[389]: root login on 'ttyS0'
root@dm900:~# cd /tmp
root@dm900:/tmp# wget https://dreamboxupdate.com/opendreambox/2.5/stable/images/dm900/zImage-re
scue-3.14-r0-dm900-20190911.bin
Connecting to dreamboxupdate.com (82.149.226.170:443)

wget: server returned error: HTTP/1.1 400 Bad Request

root@dm900:/tmp# flash-rescue /tmp/zImage-rescue-3.14-r0-dm900-20190911.bin
Fatal: Cannot access '/tmp/zImage-rescue-3.14-r0-dm900-20190911.bin'
root@dm900:/tmp#

do you have any other idea ?