Hacking r4i gold 3ds

[laetitia]

hi,
I have 2 r4 card, and I can't update the firmware of anyone of them.
The first one is a R4i gold 3ds from www.r4ids.cn, rev c
tried to update with the patch on their website, result: card check fail
The second one is a R4i Gold, non 3ds (but I can use it on 3ds anyway), also from www.r4ids.cn, rev 6
the highest fimware I could get on it is: R4iGold_NDSi145_Patch_NDSi
This gave me the icon of Dorasu.
Now I need the update at least one of them to work on 6.2.
Can anyone help me please?

I know there is been a lot of asking about this subject and a read a lot and also tried a lot, but now I out of ideas...

Thx...