Hi & happy new year to all.... i have some question/issue regarding gateway blue card and would like some help on it. I hope that I can explain it correctly. Here goes. I have gateway cards that I have use happily with my 3ds xl with firmware version 4.2. Recently, I have bought a used 3ds (not xl) with firmware version 4.5 and tried to use the same gateway cards on that 3ds. Unfortunately, when I try to enter DS mode to install the gateway installer by launching the "Deep Labyrinth Atlus USA' , my higher firmware 3ds encountered error and need to power off. Do note that the "Deep Labyrinth'' is still appeared when blue card inserted but error when launched. I then try to use the same gateway blue card on my older 3ds xl, I managed to enter the DS mode and proceed to re-install the gateway installer successfully. I have tried a few times on the newer 3ds but still unable to enter into DS mode. I have read it somewhere for people that have the same issue on the blue card, they only managed to get into DS mode and install the gateway installer by using other DS flashcart preferably DSTWO (although other R4 cards can also be use). Currently, I do not have any DS or 3DS cartridge lying around that I can use to test on my 3ds. I have also tried using Panasonic SD formatter v4 and different microsd card but still the 3ds giving me the same error. So, is it correct that if I assumed that once blue card that had been used on lower firmware 3ds will not be able to be used again on other/same 3ds with higher firmware? or there is something I need to update on the blue card? is there any other way to get my blue cards to be used again on my higher firmware 3ds as if possible I do not want to get another DS flashcart? Thanks.