My Nokia 6103 seems to work OK with Nokia Sync Addon for Thunderbird address book.
Beware of exceeding the 500 entry limit. Delete contacts on the phone (e.g. via synchronization) first. You can exclude other parts of the synchronization process by right clicking relevant items. Then update the rest.
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My Nokia 6235 seems to work OK with the Nokia sync addin for the Thunderbird address book. YAY!
My Nokia 6103 seems to work OK with Nokia Sync Addon for Thunderbird address book.
Beware of exceeding the 500 entry limit. Delete contacts on the phone (e.g. via synchronization) first. You can exclude other parts of the synchronization process by right clicking relevant items. Then update the rest.