Here is the news from r4i gold 3ds card official site
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 is only working for r4i gold from r4ids.cn, if you have other r4i or r4i gold card, do not use this patch.
how to update your r4i gold with this patch.
You need to get a DS lite or a non updated DSi or 3ds to do the update. you can not use a DSi V1,45 or 3DS V4.5.0-10 to update it, just put the latest wood firmware and this update patch on your sd card. run the patch and finish the update.