I am having the same exact issue with my sons 2DS, but the motherboard in this unit does not look like the pictures above. Im afraid to put a solder somewhere that may just bork the board. The board in this unit actually has arrows and boxes pointing to text, Im guessing marking what each jumper does? Where you circled on your board, it does not look the same, but the text where the box points to is labeled C155 DA4. Would it still be the same place to put the solder to disable the write protection?