I've already installed cfw.
Thing is the sky3ds blue button is now buttonless, back then (before frogminer), I bought a sky3ds+ to replace my sky3ds and transferred my game and save there, after frogminer, I backed up my save and game from sky3ds+ and sell it(obv not my sky3ds, xD).
And now, I knew that the sky3ds+ has some encryption thing on their saves. I thought that maybe I can restore it with my sky3ds if I only have 1 game (so I don't have to switch game). then use jksm to transfer the save to cia.
So I tried the template_tool to create my own template file for that one game and writing it to the sky3ds and restoring the save file, It works.
When I inserted the card, a blue light did flash repeatedly and stopped after like 1-2 sec, but then the game is not detected.
I am guessing that the template_tool only create lines to add compatibility to a new game to be added to the base template file.