Is my 3ds done for?

I recently made a thread about how i cant use the browser exploit(keeps getting stuck at loading)
so i decided to buy the cubid game and try the ninjhax. sadly this doesnt work either. it gets stuck at 40% while launching and sends me to the browser(which gets stuck)

its a old 3ds xl version 7.x.

is my 3ds done for?

ps: i also have gateway which was working couple months ago.(cant install it again)