I think I bricked my 2 acekard2i, wrongfully updating using acekard2i 1.4 (because my file akfw dsl is on the microsd card "Danny Phantom") on my dsl using akfw dsl update, suddenly it doesn't progress for more than 20 mins and turned it off and tried the steps again into another acekard2i and bricked again.my 2 cards have now white screen on ds and no game slot inserted on dsi. No issues on updating acekard2i on my next 18 cards directly on dsl. 2 bricked cards out of 20. I tried all the possible solutions but it doesn't progress on update. I have edge, dstt, r4, tried the akfw dsl file (or akfw dsi) and r4i, r4i pocket tested on dsi version 1.3. No solutions found on forums regarding white screen? I think acekard must do something on bricked acekard2i card using update. Thanks.
when i had a problem with dstt i loaded another good card with the flash writer before i ran it i swapped to bad card then ran it to sort problem, run it in ds lite, maybe you can do same for acekard 2i with the 1.4 update.
there is a newer 1.14update for acekards which you could try if you havent got it already...
i have uploaded it myself and have used it to update 3 of my cards, so it is legit
it is meant to work with more acekard hardware versions i believe.
buy another one and put that back in the packet and send it back as faulty, they will send you a replacement so you have a spare or sell one on to recover costs.
i do remember reading somewhere that someone with same problem as yours card update sticks at 0%
formatted an sd card loaded it with the official acekard firmware not akaio and put the update on it and it updated the card okay!
he stated akaio may have been stopping it working ok?
But if it has worked sucessfully for most of your other cards, as you say, i dont really hold out much hope this will solve your problem either im afraid, but worth mentioning i think.