Hacking Question Blue-screen after restoring nand.

igorakou · Apr 14, 2019

So I tryed restoring my switch with a nand backup I did back when I started using a CFW (the nand was done before booting into the CFW and it's on 6.1.0, I even checked it with FVI.py, and my Switch was on 6.2 when I tryed restoring the nand) and after it was done restoring, the console now only boots into a blue screen, I can't boot from a CFW either, it stops when it tries to load package2.

As I said before, I have the nand backup from before I hacked my switch, but I did not back up the BOOT0/1 files, I tryed doing it after this happened but they dont seem to work.

I've already tryed searching all over the for a solution and even tryed the "How to install/run ANY Switch firmware UNOFFICIALLY (WITHOUT burning any fuses)" guide made by rajkosto, but I get stuck on step 6 since I can't get the keys for hactool, I tryed the "How to get Switch Keys for Hactool/XCI Decrypting" guide made by PRAGMA to get the keys but when I do step 4 using the "python keys.py" command with the keys I got from biskeydump it gives me an error (probably because the BOOT0 file I have is from after my Switch got into this state) the error is:

Using BOOT0.bin to get keys from package1...
Could not find keyblob_mac_key_source! Please check the integrity of the data used in the current stage!

I also tryed LockPick_RCM but it gets stuck after it tries to read package2.

Can someone help me with this? I am really tired of searching only to not be able to resolve this issue, I don't doubt that I've missed something important or just don't understand something that might be simple, so I would really appreciate someone's help.

Edit: Forgot to mention I have 8 burned fuses.

natkoden · Apr 14, 2019

https://guide.sdsetup.com/usingcfw/manualchoiupgrade

igorakou · Apr 14, 2019

Thank you for replying, I tryed using the guide you linked but on "Step 0: Before Starting" it tells me I need the keys.txt for hactool, and as I said before, I can't get them, and since I can't boot into the CFW, I can't use the LockPick app on homebrew to get them like that either.

NanashiFinal13 · Apr 14, 2019

When you do a nand restore, you also need to restore BOOT0/1

igorakou · Apr 14, 2019

NanashiFinal13 said:
When you do a nand restore, you also need to restore BOOT0/1

Like I said in the first post, my BOOT0/1 files are from after I got this problem, I did not make a backup of them before the problem, so restoring them didn't do anything diferent.

Sm0k3r83 · Apr 14, 2019

Why didnt you backup BOOT0/1 when you made your NAND backup?

igorakou · Apr 14, 2019

Sm0k3r83 said:
Why didnt you backup BOOT0/1 when you made your NAND backup?

Because at the time I didn't know it was needed.

natkoden · Apr 14, 2019

igorakou said:
Thank you for replying, I tryed using the guide you linked but on "Step 0: Before Starting" it tells me I need the keys.txt for hactool, and as I said before, I can't get them, and since I can't boot into the CFW, I can't use the LockPick app on homebrew to get them like that either.

you can google the keys, they will work

The Real Jdbye · Apr 14, 2019

natkoden said:
you can google the keys, they will work

It will be missing console unique keys though. And AFAIK the NAND is encrypted with console unique keys.

igorakou · Apr 14, 2019

The Real Jdbye said:
It will be missing console unique keys though. And AFAIK the NAND is encrypted with console unique keys.

Would those be the TSEC and SBK keys? Because I do have them if they are actually needed that is.

Philliyxx · Apr 14, 2019

igorakou said:
Would those be the TSEC and SBK keys? Because I do have them if they are actually needed that is.

I believe these are the BIS keys.

Mattytrog actually has a thread for those who didn't back up their boot 0 or 1
https://gbatemp.net/threads/would-i...ost-blank-boot0-1-for-repair-purposes.533830/ 6.2 and 7.0 are on the *cough* site, but if you want I can generate choidujour boot 0 and 1 files if you want to try those

igorakou · Apr 14, 2019

Philliyxx said:
I believe these are the BIS keys.

Mattytrog actually has a thread for those who didn't back up their boot 0 or 1
https://gbatemp.net/threads/would-i...ost-blank-boot0-1-for-repair-purposes.533830/ 6.2 and 7.0 are on the *cough* site, but if you want I can generate choidujour boot 0 and 1 files if you want to try those

Thanks for sending me them, I'll try using this and I'll come back with the results.

igorakou · Apr 14, 2019

Alright, after using the files Philliyxx provided me I followed this guide https://guide.sdsetup.com/usingcfw/manualchoiupgrade and after doing so, the blue screen disappeared, but, now whenever I try turning my Switch on, the Kosmos logo shows up (I'm using Kosmos for this) followed by the Nintendo logo, and after maybe 1 sec, the Nintendo logo disappears and the screen stays black even though the Switch stays turned on.

Any solutions? The Nintendo logo only shows up if I boot it through the CFW, if I don't, the logo doesn't apper but the Switch satys on.

Philliyxx · Apr 14, 2019

What payload are you injecting?

igorakou · Apr 14, 2019

Philliyxx said:
What payload are you injecting?

hekate_ctcaer_4.9.1.bin

Philliyxx · Apr 14, 2019

I would format SD card and put a fresh copy of kosmos on it and try again

igorakou · Apr 14, 2019

Philliyxx said:
I would format SD card and put a fresh copy of kosmos on it and try again

The same thing still happens, I even tryed formating it to FAT32 but it still happens.

Philliyxx · Apr 15, 2019

Hmm did you do Step 14: First Launch Failed?

igorakou · Apr 15, 2019

Philliyxx said:
Hmm did you do Step 14: First Launch Failed?

Yes I did, and I got the same results.

Philliyxx · Apr 15, 2019

Try to push the payload directly, push the Fusee primary payload, if that doesn't work try ReiNX or base Atmosphere next. If those don't work I would try to do the manual downgrade again and make sure to follow all the steps 100%

Hacking Question Blue-screen after restoring nand.

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