Hacking Downgrade without BOOT1/2

[xHR]

Hi there! Sadly, I have updated to 6.2. I have only rawnand backup. Is there any way for me to launch 6.1 backup with 6.2 boot0/1 or restore boots from other switch console? Maybe I can repack boots with keys or something?

 

[k1ra]

I'm the same position with you Been trying since yesterday.....

 

[Kubas_inko]

Downgrade with choidujour (non-NX version).

 

[xHR]

Downgrade with choidujour (non-NX version).

But I have new boot0/1 from 6.2. Is it ok?

 

[Kubas_inko]

But I have new boot1\2 from 6.2. Is it ok?

You don't need anything except firmware files for this.
So it does not matter what FW are you on.

 

[xHR]

You don't need anything except firmware files for this.
So it does not matter what FW are you on.

I will try, thnx. Bring result here when done.

 

[Kubas_inko]

I will try, thnx. Bring result here when done.

Just make a backup of your 6.2.0 (boot0/1 and rawnand) just to be safe.

 

[xHR]

Just make a backup of your 6.2.0 (boot0/1 and rawnand) just to be safe.

Already done

 

[k1ra]

Don't need bis keys?

 

[xHR]

Don't need bis keys?

You cannot unpack update data properly without biskeys

 

[k1ra]

You cannot unpack update data properly without biskeys

You can't get the keys on 6.2.0 right? Do you have them?

 

[xHR]

You can't get the keys on 6.2.0 right? Do you have them?

Yes, I have backup of my keys. I sure that you cannot get them from hekate now. I tried confirm that for you latter (now switch restoring backup data and I cannot confirm now)

 

[k1ra]

Yes, I have backup of my kes. I sure that you cannot get them from hekate now. I tried confirm that for you latter (now switch restoring backup data and I cannot confirm now)

I thought you only have rawnand dump like me I'm screwed

 

[Wezaa]

Sorry I am way behind on what I need to backup.
I haven't updated to 6.2.

I am on 6.1 with a full raw nand backup and boot0/1 backup.

What are biskeys, do I need them and how do I back them up?

Thank you

 

[k1ra]

Sorry I am way behind on what I need to backup.
I haven't updated to 6.2.

I am on 6.1 with a full raw nand backup and boot0/1 backup.

What are biskeys, do I need them and how do I back them up?

Thank you

https://gbatemp.net/threads/how-to-...nofficially-without-burning-any-fuses.507461/
Step 2

 

[xHR]

https://gbatemp.net/threads/how-to-...nofficially-without-burning-any-fuses.507461/
Step 2

You cannot obtain keys from 6.2.0, soorry

 

[Wezaa]

You cannot obtain keys from 6.2.0, soorry

It's alright, I'm on 6.1

 

[Raugo]

I thought you only have rawnand dump like me I'm screwed

You can use the boot0/1 of a donor, the boot1 can be inyected directly, the boot0 need to be modified with the keyblood of your actual boot0.

 

[xHR]

You can use the boot0/1 of a donor, the boot1 can be inyected directly, the boot0 need to be modified with the keyblood of your actual boot0.

Kan you give some more information about modification of boot1?

 

[smilodon]

I am in the same situation. Fortunatly, I have my 3 TSEC keys, my SBK/DK and an old 4.1 rawnand.bin. Is there any way I can restore this backup with those?