Hacking Question Can I downgrade without a NAND backup?

[Jellykrop]

Spoiler

View attachment 158923

I see, I will try to restore my 6.1 NAND backup, thanks

 

[Kubas_inko]

I see, I will try to restore my 6.1 NAND backup, thanks

If you can boot to maintanence mode, try factory reset.

 

[Adran_Marit]

Hi,
I just downgraded from 6.1 to 4.0.1 using ChoiDuJourNX (no fuses were ever burnt, my fuse count is 5 and the Switch came with 4.0.1 out of the box).
Now when I click on "boot CFW" on SX OS it displays the Nintendo logo, then "an error has occured, Error code : 2002-4315" and it shows me my serial number and my firmware version "4.0.1" and nothing else... How can I recover from this please?
I have a NAND backup of 6.1 that I did before downgrading, and access to Hekate, but autoRCM was enabled so I don't know if my boot partitions are valid...

I just got it, you downgraded with ChoidujourNX, I just remembered what it was, restore your 6.1 backup then redowngrade with choidujourNX but this time on the left check system initialisation

 

[Jellykrop]

I just got it, you downgraded with ChoidujourNX, I just remembered what it was, restore your 6.1 backup then redowngrade with choidujourNX but this time on the left check system initialisation

Thanks! I'm a bit worried to try it again to be honest but why not

 

[Adran_Marit]

Thanks! I'm a bit worried to try it again to be honest but why not

So long as you got the backup, there's little that can permabrick the system XD

nah when downgrading its best to do the system initialisation unless you are restoring a backup from what I've found

 

[Jellykrop]

So long as you got the backup, there's little that can permabrick the system XD

nah when downgrading its best to do the system initialisation unless you are restoring a backup from what I've found

Thank God for that, I don't want to brick my beloved console What does system initialisation mean?

 

[Adran_Marit]

Thank God for that, I don't want to brick my beloved console What does system initialisation mean?

Basically factory restore when downgrading and you need to redo the setup process

 

[josete2k]

https://gbatemp.net/threads/error-code-2002-4315.524253/

 

[Jellykrop]

Basically factory restore when downgrading and you need to redo the setup process

So that means losing my game saves, right?
PS : it's restoring right now...

 

[Adran_Marit]

So that means losing my game saves, right?
PS : it's restoring right now...

yep, but you can back them up first in cfw with checkpoint/jksv

 

[Jellykrop]

yep, but you can back them up first in cfw with checkpoint/jksv

Didn't know that, interesting.

 

[Adran_Marit]

Didn't know that, interesting.

so CFW > backup saves > downgrade > cfw > restore saves

That's good if you aren't going legit, going legit is a little more complex to keep saves lol

 

[Jellykrop]

so CFW > backup saves > downgrade > cfw > restore saves

That's good if you aren't going legit, going legit is a little more complex to keep saves lol

Copied that. Thanks a lot!

 

[Kafluke]

https://gbatemp.net/threads/psa-sto...ou-know-what-youre-doing.531861/#post-8520674

 

[Jellykrop]

My console is back from the dead! Thanks a lot to all of you!!! You're the best!

 

[Adran_Marit]

My console is back from the dead! Thanks a lot to all of you!!! You're the best!

No worries, I'm here to help