Hacking NAND Backup restore and software update

[Shaqattack101]

Hi,

Im new to the scene, so hopefully there is no thread for it already.

I got a switch with 3.0.2 and want to play the BotW DLC2 which needs an update.

Would it be possible (with atmosphere not the xecuter chip) to update to the latest firmware and later on downgrade with the NAND backup?

 

[yeddish]

That will likely be possible in the future, but as of right now, it is not.

 

[Thetoto]

No. You can't downgrade the Switch, because efuses. But you will maybe can launch a cfw with a lower version. But not original fw.

 

[Deleted-442439]

Welcome to the scene

To answer your question:

Atmosphere will run from emunand (SD card) and will thus be running the newest FW, so you can play BOTW DLC2 once Atmosphere is released.

However it is impossible to downgrade the NAND, so you will need to boot into Atmosphere every time you want to use it.

 

[MHDestination]

That will likely be possible in the future, but as of right now, it is not.

Are you sure?

Won't hekate bypass efuse checks?

I think it should work by now. But you won't be able to boot without rcm mode + hekate

 

[Thetoto]

Are you sure?

Won't hekate bypass efuse checks?

I think it should work by now. But you won't be able to boot without rcm mode + hekate

I don't know if it's work but it's useless. You can't launch original firmware (without fusee felee) so why downgrade ?

 

[MHDestination]

I don't know if it's work but it's useless. You can't launch original firmware so why downgrade ?

Doesn't hekate have boot modes for original fw and patched fw (cfw) ?

Yeah, won't make to much sense for me too.
But the question was "is it possible?"

 

[Thetoto]

Yes, I just edited my post. You can't load original firmware, without fusee gelee and RCM mode.
But yes maybe it's possible

 

[Shaqattack101]

Thanks for all your replies! So should I wait with the update until atmosphere comes out and therefore I will have an up-to-date cfw where I can play the dlc?

 

[Thetoto]

Thanks for all your replies! So should I wait with the update until atmosphere comes out and therefore I will have an up-to-date cfw where I can play the dlc?

Yes it's more safe

 

[SkillingCat]

Wether or not you're updating, you should consider keeping a backup of your nand (ofc one that matches your switch fw version because of efuses), even if what we have rn is supposedly safe, it's better to be safe than sorry, as you can always make a mistake. For example a nand backup saved my n3ds xl from becoming a paperweight, because I used dgTool on an already arm9loaderhaxed system to try to fix some issues (yeah genius lol).