Hacking Game cartridges that update to 9.2

[Raybrand]

so I found this game cooking mama on 'http://www.amazon.co.uk/gp/product/B00T2GUQYS?redirect=true&ref_=s9_simh_co_p63_d0_i1'

I'm having technical issue getting to 9.2 using rxtools so I thought I'd try this and I just want to confirm will this work?

I have an EU Old3ds XL on sysnand 4.2

 

[DKB]

http://3dsdb.com/

 

[Retroman957]

I Know Smash Bros has 9.2 on it

 

[Ronhero]

For eur I think cook mania is 9.2