How to sync Nokia 6233 in iSync

1. Go to /Applications -> iSync.app -> Contents -> PlugIns -> ApplePhoneConduit.syncdevice -> Contents -> PlugIns -> PhoneModelsSync.phoneplugin -> Contents -> Resources. (From Finder, use Shift-Command-G, for Go to Folder.)
2. Open upp MetaClasses.plist in your favorite text editor.
3. Search for com.nokia.6260. Copy the following text. Past before the <key>com.nokia.6260</key>:

########
        <key>com.nokia.6233</key>
        <dict>
                <key>Identification</key>
                <dict>
                        <key>com.apple.cgmi+cgmm</key>
                        <string>Nokia+Nokia 6233</string>
                        <key>com.apple.gmi+gmm</key>
                        <string>Nokia+Nokia 6233</string>
                        <key>com.apple.usb.vendorid-modelid</key>
                        <string>0x0421/0x043D</string>
                </dict>
                <key>InheritsFrom</key>
                <array>
                        <string>family.com.nokia.series40.3rdEd.bus.usb-bt</string>
                </array>
                <key>Services</key>
                <array>
                        <dict>
                                <key>ServiceName</key>
                                <string>com.apple.model</string>
                                <key>ServiceProperties</key>
                                <dict>
                                        <key>ModelIcon</key>
                                        <string>NOK6233.tiff</string>
                                        <key>ModelName</key>
                                        <string>6233</string>
                                </dict>
                        </dict>
                        <dict>
                                <key>ServiceName</key>
                                <string>com.apple.synchro</string>
                                <key>ServiceProperties</key>
                                <dict>
                                        <key>MaxCityLength</key>
                                        <integer>50</integer>
                                        <key>MaxEMailLength</key>
                                        <integer>126</integer>
                                        <key>MaxEventLocationLength</key>
                                        <integer>150</integer>
                                        <key>MaxPhoneNumberLength</key>
                                        <integer>50</integer>
                                        <key>MaxPostalCodeLength</key>
                                        <integer>50</integer>
                                        <key>MaxStateLength</key>
                                        <integer>50</integer>
                                        <key>MaxStreetLength</key>
                                        <integer>50</integer>
                                        <key>MaxURLLength</key>
                                        <integer>126</integer>
                                </dict>
                        </dict>
                </array>
        </dict>
########

4. Download the NOK6233.tiff file to the Resources folder (/Applications -> iSync.app -> Contents -> PlugIns -> ApplePhoneConduit.syncdevice -> Contents -> PlugIns -> PhoneModelsSync.phoneplugin -> Contents -> Resources).
5. Launch your iSync. You are ready to sync.