yeah someone already done it,If one backs up a 4.5 3ds nand via gateway firmware backup, then updates to 7.2 and download the x and y patches and bank and poke trasnporter as well as links the nintendo id, and then uses hardware mod to backup the nand, can one then downgrade using the 4.5 gateway nand backup and put the 7.2 and all its patches and apps into the emunand on the sd card? If so is there any risk. I.e if I can rip the nand succesfully will I be able to write it back just as easily with the win32diskimager program.
side question what watt/temp do people think is good and safe for soldering on 3ds xl?
1. backup nand via hardware mod(just to make sure its working)
2. update to 7.2 and download patches,
3. dump the 7.2 nand, and restore back to 4.x
4. inject your new 7.2 dump into emunand
all done
XL is pretty easy if you have soldering experience, just use a low wattage soldering iron like 15 watt to be safe