@David-TP Thank you very much. II'll contact o2 for Firmware-Update.

Hi David, thank you for the info. In fact, i have my M8550 from ISP o2 in Germany. I thought there was only a standard version. Where can i find firmware for my Router or is it possible to flash...

Yes, i unzipped the downloaded file

Hi, i try to update firmware on my M8550 (current firmware is 1.1.0 3.0.0 v60d8.0 Build 250426 Rel.66882n) to a newer. But no matter which firmware i try to update, i always get error " Error code:...