Just a heads up... Crosspost from the other thread about the system update....I skipped updating my R4i gold 3DS when I heard that you needed to cut a circuit on the PCB, and stayed with the older version of the 3DS firmware, before the new Streetpass games were added. I jumped on the new card update since nothing was mentioned about having to cut the board.I updated successfully to the 6.2 firmware for the cart, then updated my 3DS, and the cart worked in my DS lite but NOT in my 3DS. I would get the message that an error had occurred and I had to power off.I opened the cart and cut the line between C1 and R9 as mentioned in the documentation for v6.0 of the cart firmware, even though I hadn't performed the update to the v6.0-6.1, and lo and behold, i was able to pass the error screen and successfully use my card again. Just in case anyone had followed this same path.
Great feedback Topher587, saved my day after a long struggle with the same issue. Thank you!