when trying to downgrade my o3ds on version 10.5 with safeupdater. I keep getting this error. any solution?

THERE IS NO MEMCHUNKHAX 2 on 10.5, you need an hardmode to downgrade 10.3 firstwhen trying to downgrade my o3ds on version 10.5 with safeupdater. I keep getting this error. any solution?
what is a hardmode?THERE IS NO MEMCHUNKHAX 2 on 10.5, you need an hardmode to downgrade 10.3 first
Just use google next time, there is enough thread about this
I think they messes up, It's called a 3ds hardmod, It's solderings some stuff inside the 3ds you you can dump or mod the nand chipwhat is a hardmode?

it hard to explain, but basically, you solder some wire to the NAND (hardware) and make it that can be connected to an SD card adaptater. You need soldering skill, there is people on gbaTemps that do it like @hundshamer I thinkwhat is a hardmode?