Hacking r4itt v1.6

[smokenax]

i went to their site but it does not have any step by step instructions. on the box it says r4itt upgrade does that mean i have to have previous firmware? any info on how to install would be very helpful.
thank you and excuse my noobness.

 

[0ddity]

Are you using a DSi, if so what version firmware?

 

[RoMee]

return it and buy a real flash cart