Hacking Very n00b question about hard mode

[bbvgtal82]

I already have my back up NAND of my JP console with 11.2 now my console have 11.5 but no custom fiormware because format to stock

my question is can i install CFW ig alrady have my NAND back up with hard mode guide? even if not do nothing to the hardware??

 

[Quantumcat]

You'll need a hardmod or DSiWare hax to flash the backup back to your system.