dw guys i got it sorted, a friend of mine lend me his R4 Revolution and I installed the R4 Wood 1.9.1 kernel on the memory card and have been playing Golden Sun Dark Dawn for 3+ hours and no problem so far!
And some of u didn't read, I only wante to buy DSTT because that's what it sells in my local website, either that or the other ones are too expensive for me. Sure it might be cheap from some websites but after converting the currency to NZD, it'll be expensive for me, as well as adding the shipping cost too. I'd rather just buy it from my local website which I know is safe (Trademe) because it's made for New Zealanders, kinda like how NewEggs is mainly for USA for buying computer parts. Plus, it's faster for me to buy it locally anyway.
But anyway I didn't end up spending any money at all which is good, but thanks anyway.