I have the same problem but with Dreambox 7020-S

Wasnt first time i flashed it , but today i have no idea why cant flash it via http and dreamup , any idea for 7020-S ?

Thank you

edit:

I see something more right now , when i connect the Lan cable to DB7020 cant boot and have msg on LCD Boot #35 ant then the ip ********** and /flash/zimage.elf .
I have to dissconnect the cable , and restart DB7020 in case to boot normally .