This should be almost correct:
<key>A1000</key>
<dict>
<key>ATI3Response</key>
<string>Motorola Mobile Phone</string>
<key>AgendaDatabasePath</key>
<string>c:\documents\agenda\agenda</string>
<key>AgendaMappingsPath</key>
<string>P900AgendaMappings</string>
<key>ClassId</key>
<string>5382668</string>
<key>MappingsPath</key>
<string>P800mappings</string>
<key>iSyncIniPath</key>
<string>c:\documents\iSync.ini</string>
</dict>
iSync recognizes the A1000 (if you put a A1000.tiff in the proper directory (which is: /System/Library/SyncServices/SymbianConduit.bundle/Contents/Resources ) it also uses the correct icon), but at the time of syncro the phone resets.
If someone can solve this out this will be the "clean" way to make things work.
The other way is to force iSync to recognize the A1000 as a P900.
To do that follow what follows:
Edit the file SymbianConduitDefaults.plist
in /Library/Application Support/SyncServices/501
(if 501 is your user ID, otherwise select yours)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
<dict>
<key>kBTEmptyFolderIsOkayReally</key>
<false/>
<key>kBTFilteringDestinationFolderID</key>
<string>F 122213242.11</string>
<key>kBTFilteringDestinationFolderName</key>
<string>Home</string>
<key>kNSSyncConduitFilteringContactGroupMap</key>
<dict/>
<key>kNSSyncDeviceID</key>
<string>xx-xx-xx-xx-xx-xx</string>
<key>kNSSyncDeviceName</key>
<string>A1000 (or whatever name you want your device to show in iSync)</string>
<key>kNSSyncDeviceShouldSlowSyncCalendars</key>
<true/>
<key>kNSSyncDeviceShouldSlowSyncContacts</key>
<true/>
<key>kNSSyncDeviceUseCalendars</key>
<true/>
<key>kNSSyncDeviceUseContacts</key>
<true/>
<key>kSymbianConduitModelKey</key>
<string>P900</string>
<key>kSymbianHasDeviceSynced</key>
<true/>
</dict>
</array>
</plist>
Modify the xx-xx-xx-xx-xx-xx key kNSSyncDeviceID with your A1000's M.A.C. Bluetooth (retrieve it in Bluetooth Preferences, Devices panel).
Pay attention:
<key>kSymbianConduitModelKey</key>
<string>P900</string>
must not change.
Now open iSync, and you will see your phone already set up in the main panel (P900 icon; you can easily place an A1000 icon if you replace the "P900.tiff" with a A1000 img).
To syncronize the phone, open the Desktop Suite preferences and select bluetooth and then your mac from the list of found devices, then in the same main app select "connect".
Note: The "Erase all at first sync" won't work, it will erase and then reset the phone. So let it be reset or clean it up manually and then go for the "add the Phone's to Mac's contacts"
That's it. Remember to save a copy of the file you edited, in case you should "remove the device" from iSync. Otherwise iSync would restore the default file, wich is -of course- empty.