I have the rev C that came with Dorasu as well, bought the card in mid-July, and was already 1.4.3 patched, and I updated it to 1.4.4 (Metroid Prime Demo icon). This is the first patch to give me problems. I wonder if I have like, a first-gen C card that might be the "Metro" they are talking about? My DSi and 3DS specs are below in red and orange:My revision C came with Dorasu when I got it. Could that have anything to do with it? I think others saying this patch works also mentioned the Kirby icon on their card so that seems important.
EDIT:
I think I have found something
http://www.oz3ds.com/blog/archives/440
This site says:
"1. Your R4i gold 3ds must be with the PCB board marked “C”
2. Your R4i gold 3ds must be with the icon , ” DEEP LABYRINTH ” or ” Kirby ”
(As there is another icon on PCB “C” named “METRO” which is not available, pls take it easy, the official team will release another patch to support it. )"