Hacking NAND Restore Questions

[SmashApe]

Hi all,

When I first got my Switch I did a NAND backup and have been offline on CFW ever since. I now want to run OFW on SysNAND and CFW in EmuMMC.

A few questions;

1. My clean NAND backup is on 5.0.0 and my live CFW is on 6.0.0 (fuses burned) and 9.0.0 with ChoiDujourNX. Will restoring a 5.0.0 NAND with 6.0.0 fuses burned on the Switch cause any issues?
2. I'm assuming if I want to play Fortnite online that I'll need the latest firmware on SysNAND, and I assume fuses must be burned to do that?
3. Can I restore my current CFW into EmuMMC so I don't lose all of my settings, saves etc?

Sorry for all the questions, I just didn't want to balls this up and brick my unit.

I really appreciate any help.

Cheers, SA

 

[Budsixz]

1. Since your fuses are burnt downgrading means that you will have to keep AUTORCM ON always. Else you wont be able to boot.
2. Yes you Sysnand has to be on latest fw to play online. you can boot normally in your sysnand at 9.0 only. If it is on lower fw then only will you need autorcm.
3. Yes restoring the mmc means everything will revert to how it was including save files, games, etc. EVEN THE ONES IN MEMORY CARD.

 

[F4mouZSt4r]

1. If you downgrade back to 5.X you need to use autoRCM or update back to 9.X, this way you can disable autoRCM
2. Yes you need to be on the latest FW
3. You can backup the Saves with Checkpoint and migrate the emuNAND from the NAND, means you only need to reinstall the games, the Save could be still there but if not, you can restore them with Checkpoint

 

[SmashApe]

1. Since your fuses are burnt downgrading means that you will have to keep AUTORCM ON always. Else you wont be able to boot.

You mean I won't be able to manually boot (with a jig) into RCM?

 

[Budsixz]

You mean I won't be able to manually boot (with a jig) into RCM?

If you come from a higher fw to lower fw (with fuses burnt) then you wont be able to normally boot up your switch unless it is in autorcm. It gets stuck in bootloop or kernel panic is what they say (maybe putting it rcm manually everytime would work too but better ask someone)

 

[SmashApe]

If you come from a higher fw to lower fw (with fuses burnt) then you wont be able to normally boot up your switch unless it is in autorcm. It gets stuck in bootloop or kernel panic is what they say (maybe putting it rcm manually everytime would work too but better ask someone)

Well I only want to manually RCM once and then I'll update it to the latest OFW (I don't care about burning the fuses). So as long as I can manually RCM once. I think there is a concern with hackers that Nintendo can detect Autorcm.

 

[Budsixz]

Well I only want to manually RCM once and then I'll update it to the latest OFW (I don't care about burning the fuses). So as long as I can manually RCM once. I think there is a concern with hackers that Nintendo can detect Autorcm.

What i did for my downgrade was -
1. Take full backup of saves (and nand +boot0&1 just incase)
2. Restore my old clean 6.1 nand (was on 7.0.1) and turned on autorcm
3. Update to 8.1 via official method (this will automatically turn off autorcm)
4. used cfw later

 

[Kafluke]

So much misinformation here. No you dont need autoRCM if you downgrade. You're correct in assuming you can use your jig. With a fuse mismatch you just have to use a custom bootloader. Read the PSA in my sig.

 

[Budsixz]

So much misinformation here. No you dont need autoRCM if you downgrade. You're correct in assuming you can use your jig. With a fuse mismatch you just have to use a custom bootloader. Read the PSA in my sig.

what part of it is wrong? except maybe the autorcm which i already said I wasnt sure of but i knew we cant boot normally after downgrade

 

[Kafluke]

what part of it is wrong? except maybe the autorcm which i already said I wasnt sure of but i knew we cant boot normally after downgrade

You werent the only one who said autoRCM was necessary.