information: a) SW release version 1.50.6. This SW is intended for Germany and France b) for Linux source code see version 1.49.5 c) for installing the SW execute the file 1_50_6.exe with a PC. Afterwards you get a file named 1.50.6.wsw. Use this file 1.50.6.wsw to upgrade the SW version of the Gigaset M740AV