Update: Since Atmosphere has released with 7.0.X support, To downgrade without a backup, just use ChoidujourNX.
For those with backups you can still follow the method below

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After seeing reports of downgrading back to 6.2 been broken after updating to switch firmware version 7.0, I can confirm these to be false. I successfully downgraded my switch with 9 burnt fuses on 7.0 to 6.2 with 9 burnt fuses

Downgrading to 6.2 is possible and not broken. Both boot0/boot1 must be the same version as nand backup

• Step 1) Place 6.2 nand + boot0/1 backup on sd card
• Step 2) Boot into RCM and launch hekate
• Step 3) Restore boot 0/1
• Step 4) Restore GPP Partitions (or rawnand, I personally used GPP Partitions)
• Step 5) Launch CFW using Hekate 4.6 or ReiNX 2.0 or sxos (haven't tested with fusee-primary)
• Step 6) ????
• Step 7) Profit

EDIT: This is for FG consoles not ipatched
EDIT 2: You will loose any saves you don't have backed up

Will upload proof if people desperately wish

 

[alimao]

Do you have a previous backup?

I did not rawnald .because it was always screen black I only did boot0 boot 1

 

[Adran_Marit]

I did not rawnald .because it was always screen black I only did boot0 boot 1

Did you only backup rawnand and boot or are you saying you only restored the boot files

 

[alimao]

Did you only backup rawnand and boot or are you saying you only restored the boot files

restored the boot files only

 

[Adran_Marit]

restored the boot files

restore rawnand as well

 

[alimao]

restore rawnand as well

not have

 

[Adran_Marit]

not have

well you messed up there. the switch won't boot if the boot0/1 doesn't match the nand...

Your only option now is to follow the manual choi method

 

[alimao]

I already did this method, and it is still unsuccessful
I receive black screen

 

[Adran_Marit]

I already did this method, and it is still unsuccessful
I receive black screen

tell me... when you did the manual choidujour downgrade did you do each step correctly?

 

[alimao]

tell me... when you did the manual choidujour downgrade did you do each step correctly?

yes correctly
I suspect keys wrong which are generated are not from the factory console

 

[kxao]

Can someone help me? my nephew has updated my NS to version 7.0, and I do not have a previous backup of the nand, I'm following the manual downgrade process, but I did not understand how to get the hactool keys.txt. Can anyone guide me?

 

[PrEtZaL]

Can someone help me? my nephew has updated my NS to version 7.0, and I do not have a previous backup of the nand, I'm following the manual downgrade process, but I did not understand how to get the hactool keys.txt. Can anyone guide me?

Just wait till 7 is supported

 

[Kronos2308]

Hi i try to make a downgrade from a switch in 7.0.0 to 6.1.0 without a nand backup using choidoujur.exe but i modify my nand has the tutorial say , left intact prodinfo al replase the partition in order to make downgrade but still went i try to run AMS say key derivation failed ReiNX al well
I follow a tutorial post here

 

[Masterroshi]

Hello im new. I just upgraded my switch to 7.0. I want to downgrade but i cannot export my keys. Should i just wait until 7.0 is cracked?

 

[Adran_Marit]

Can someone help me? my nephew has updated my NS to version 7.0, and I do not have a previous backup of the nand, I'm following the manual downgrade process, but I did not understand how to get the hactool keys.txt. Can anyone guide me?

Google "switch masterkey 05" or wait for 7.0 support, also make a 7.0 backup of nand and boot.

Hello im new. I just upgraded my switch to 7.0. I want to downgrade but i cannot export my keys. Should i just wait until 7.0 is cracked?

Just wait

 

[Masterroshi]

Google "switch masterkey 05" or wait for 7.0 support, also make a 7.0 backup of nand and boot.



Just wait

Well I tried to roll back to 6.1 with no success. I used this guide (manualchoidowngrade) and did everything up until the part where you have to dump your TSEC keys. firmware 7.0 gives me an error. (Could not identify package1 version to read TSEC firmware <= '20180802162753'>). So i just restored NAND and will wait.

 

[Masterroshi]

Well I tried to roll back to 6.1 with no success. I used this guide (manualchoidowngrade) and did everything up until the part where you have to dump your TSEC keys. firmware 7.0 gives me an error. (Could not identify package1 version to read TSEC firmware <= '20180802162753'>). So i just restored NAND and will wait.

-nevermind dumped my keys using biskey

 

[AngeloftheNight091]

I followed the steps in the guide, but now my console will not power on. I have held the power button in for 15 seconds, and then attempted to power on but no response. I restored Boot 0/1 and RawNand. Any tips?

 

[Adran_Marit]

I followed the steps in the guide, but now my console will not power on. I have held the power button in for 15 seconds, and then attempted to power on but no response. I restored Boot 0/1 and RawNand. Any tips?

did the backups match?

 

[AngeloftheNight091]

did the backups match?

Yes, they were my own backups

 

[Adran_Marit]

Yes, they were my own backups

I mean where they both for the same firmware version?