A good friend of mine has a nokia 6300. Being a MacBook Pro user himself, he was frustrated that iSync was not compatible with his device. After googling the problem he found a solution.
As he was not confident enough to do the steps by his own he asked me to do it. So I did it, but moreover I found out that this methodology could be applied to other devices not supported by iSync (like my nokia 3500 classic).
1) Find out if your device operating system is the same as any device supported by iSync. For example Nokia 6000, 6300 and 3500 have all the same OS.
2) Right click on iSync app and select “Show Package Content”.
3) Go to Contents -> PlugIns -> ApplePhoneConduit.syncdevice -> Contents -> PlugIns -> PhoneModelsSync.phoneplugin -> Contents -> Resources
4) Open MetaClasses.plist. and find the device name which has the same OS as yours (eg nokia 6000).
5) Copy from <key>device.code</key> to the last </dict> of this entry (eg. <key>com.nokia.6000</key>).
6) Paste the selection just below </dict>.
7) Rename the device code to yours (eg. <key>com.nokia.3500</key>).
8 ) Save and quit.
9) Find an icon of your device and make a 60X60 pixel .tiff file out of it (eg. NOK3500.tiff).
10) Drop the tiff file to the package and then close.
Thats it. I tried it on my nokia 3500 classic and worked just fine.
Very important backup the iSync.app file to another location before attempting any of the above.
This is NOT guaranteed to work. It happend to work for my device and I just mention my experience. Try it at your OWN risk.
