Hacking Switch stuck on Nintendo logo after downgrading.

[Axodique]

I did something very dumb. I attempted to downgrade without a NAND backup. I'll never reproduce an error such as this again, so please help. The version I downgraded to is 6.0.1 using ChoidujourNX. It's been a few days now without me finding a solution, so I thought i'd ask here. I'm on Hekate, so it's probably not the fuses since I think it bypasses it ?

My switch was already banned though, so something that'd get me banned I can do.

Thank you for your time, even if you do not succeed in helping me.

 

[KeoniAzugon]

Have you tried Recovery Mode to Force Update it Back up?

----
In order to enter Recovery Mode, the following combination must be performed:

• With the system powered off, press and hold Volume Down + Volume Up;
• Press the Power button while still holding Volume Down + Volume Up;
• Let go of the Power button and keep holding Volume Down + Volume Up until the maintenance applet shows up.

This results in the system booting into a menu that allows to update your Nintendo Switch through the internet and format/initialize the console with or without keeping user info, screenshots and saves. It is possible to use this menu to delete the nagging update message if your console downloaded an update.

The [1.0.0] variant (known as Maintenance Mode) does not have the system update option. However, downloaded update data is still deleted when this menu is accessed.

 

[Axodique]

It doesn't do anything when i try these manipulations.

 

[Kubas_inko]

Boot to maintenance menu (vol up & down while booting from hekate) and format your switch.
That might do the trick, but you will lose everything!

 

[Axodique]

I guess i'll try that later

 

[Axodique]

I know this is old, but i haven't got the time to try it these past two months. But yeah I can't boot into the maintenance menu

 

[Lacius]

I know this is old, but i haven't got the time to try it these past two months. But yeah I can't boot into the maintenance menu

Restore your NAND backup.

 

[Axodique]

Restore your NAND backup.

Look at the first post

 

[Lacius]

Look at the first post

Sorry, I thought you were necrobumping someone else's post, not your own.

Make a backup of your NAND and then follow this guide if you haven't already done so:
https://suchmememanyskill.github.io/guides/unbrick/

 

[Axodique]

Quick question : can i restore my console with the atmosphere automatic backups ?

 

[Draxzelex]

Quick question : can i restore my console with the atmosphere automatic backups ?

No because Atmosphere only backs up the PRODINFO. You can only restore complete NAND dumps made with Hekate.

 

[Axodique]

Welp.. guess i'll try wiping my console

 

[Souperman9]

Welp.. guess i'll try wiping my console

Did you read Lacius's instructions? Wiping your switch won't do anything - you probably have burnt fuses.

Sorry, I thought you were necrobumping someone else's post, not your own.

Make a backup of your NAND and then follow this guide if you haven't already done so:
https://suchmememanyskill.github.io/guides/unbrick/

 

[miss_nakano]

Could you tell us why you downgraded? New games require higher firmware anyway.

 

[ZachyCatGames]

Did you read Lacius's instructions? Wiping your switch won't do anything - you probably have burnt fuses.

If it was fuse shit, they wouldn't even be getting a backlight.

 

[Souperman9]

If it was fuse shit, they wouldn't even be getting a backlight.

Oh, I didn't know the check was that early. In any case, would wiping really help? The best option would be to rebuild nand, no?

 

[Hayato213]

Oh, I didn't know the check was that early. In any case, would wiping really help? The best option would be to rebuild nand, no?

If they had the matching NAND dump and the boot0/boot1 they can use that to restore it, if they burned too many fuse and downgraded, the bootloader refuse to boot, have to rebuild with Choidujour.

 

[ZachyCatGames]

Oh, I didn't know the check was that early. In any case, would wiping really help? The best option would be to rebuild nand, no?

It's during pk1ldr and/or nxbootloader.
Dunno, OP wasn't super clear about what's happening. I don't believe it's possible to get stuck at the Nintendo logo.

If it's black screening after the Nintendo logo, that's likely a missing/corrupt NCM save (8000...00120).

If it's freezing at the Nintendo Switch logo, there's several things that could possibly be (fucked CAL0, hardware issues, etc).

 

[Axodique]

I would like to thank everyone who has helped me here, Lacius specifically. I managed to get my switch back by rebuilding the MMC (or something).