Thanks for posting this link to the thread. Inside it I did not find a solution but this thread: Flashcp => /dev/mtd0 2.11.5 which offers a lot of ideas on how to resolve this issue. Sadly my understanding of that matter is still limited, so I don’t know which of those ideas is the right one which doesn’t cause trouble (“bricking” the board — as I have no access to some serial hardware to restore the firmware when something goes wrong). Could someone who actually upgraded to firmware v3.7.5 post the way how it was done? Explantations would be a bonus!
Thanks in advance,
Lars