Problems transferring contacts from Siemens CX75 to PC

I've tried many many ways, but still can't find the best solution to transfer contacts from Siemens CX75 over Bluetooth connection.

Mobile Phone Manager (Windows) from Siemens doesn't support Windows 7 and Vista. On Windows XP it has problems detecting the phone, but once it a while it can connect. The problem is that the phone gives error when trying to backup contacts with the Mobile Phone Manager or when trying to sync them.

XMPM (Linux) from BenQ-Siemens is hard to download. After long search I've managed to download the tar.gz archive with XMPM 1.3 from supposedly BenQ-Siemens FTP server:

ftp://217.21.255.101/mobile_phone/drivers/el71/xmpm_installer-1.3.06.34.0.tar.gz

The archive manager for Ubuntu can't unpack anything from it, while when unpacking with

tar xfzv xmpm_installer-1.3.06.34.0.tar.gz

I get the following error:

gzip: stdin: invalid compressed data--length error
tar: Child returned status 1

However most files are extracted properly and after replacing some lines, i.e.

1.

export PATH=$PATH:/usr/lib/jre-1.4.2_09/bin

onto

export PATH=$PATH:/usr/lib/jvm/java-6-sun-1.6.0.20/jre/bin

2.

echo "$version" | grep -q '1.4.2' &&

onto

echo "$version" | grep -q '1.6' &&

3.

export JAVA_HOME="$(cat $TMPFILE)";

onto

export JAVA_HOME="/usr/lib/jvm/java-6-sun-1.6.0.20";

I managed to start xmpm:

~/Downloads/XMPM_Installer-1.3.06.34.0$ sudo xmpm-service.sh start
~/Downloads/XMPM_Installer-1.3.06.34.0$ xmpm

The problem is that XMPM doesn't detect CX75.

I tried to use alternative software as well:
Wammu (Windows) - crashes while trying to detect the phone without showing any error.

Wammu (Linux) launches just fine. And it seems to be a nice program with automatic mobile phone detection. However it can't find my phone connected via Bluetooth. Don't know how to fix this.

gscmxx (Linux)
I've installed Perl-GTK, but didn't manage to launch this GUI program

SCMxx (Linux)
Didn't play with this command line tool. It needed to show a port number like

scmxx --info --device /dev/rfcomm0

but I haven't found a good tutorial for using it with Bluetooth.

KMobileTools (Linux)
I have no idea how to set this up to use with Siemens CX75 connected via Bluetooth.

Mobile Master (Windows/Shareware)
The program is very buggy. Lots of things need to be done manually or just don't work. I didn't manage to sync my phone, because it was giving the same error as with Mobile Phone Manager. But I was able to retrieve contacts. The problem is that the contacts doesn't use latin characters, so I got just numbers with weird characters. I have tried to convert them and was able to see 75-80% of the text. The solution is far from ideal, but so far the best I have found.