Today R4i gold 3ds official site has released a new update patch, with the new patch some more old r4i gold cards can support the DSi V1.45 then. if your r4i gold card still can not work on the new update patch. just use this patch to update your card and try again.

The new patch for DSi/XL V1.45 is releasing!(2013-01-23)
This new patch is only for DSi/XL V1.45, it's applied for those R4i Gold 3DS revision (6,7,8,9,A,C) cards, We are still working on 3DS V4.5.0-10 patch for few old revision cards, will release another patch very soon, thanks for your patience... [Download Now]

This update patch is only available for this r4i gold card: R4i Gold 3DS Wood R4i 3DS flashcard For DS DSi 3DS if you have other r4i or r4i gold card, do not use this patch.

How to use this r4i gold patch

Download it, extract it, put the correct update patch on the sd card, put the latest wood firmware on the sd card, run the update patch, by the way, you need to use a DS lite or other non updated DSi or 3DS to do this update.