1. b2theram

    OP b2theram Newbie
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    Hello Guys,

    I'm new here to the forum and just purchased a 1st gen Jailbroken switch (Hetake 5.1.1). The previous owner provided me with a clean NAND backup including BOOT 0/1 that was made on FW 4.1.0 (I checked dumping the syskeys and using FVI.py). Now I'm up to the point were I wish to restore the Sysnand to default and clean to then setup a dual profile to run CFW and OFW alongside each other to be able to play online and enjoy all the jailbreak stuff. (The switch has never been online since it has used CFW).

    I've been checking multiple forum posts and can conclude the following;

    - I can run a restore through Hekate and restore my clean Nand backup that runs on FW 4.1.0.
    - Once the restore is complete, I can boot into OFW using hekate.
    - I should be able to then update the 4.1.0 sysnand to match my burnt fuse count (8) version 6.2.0 using ChoiDujourNX
    - Once the above has been done my Nintendo is back to 'stock'.

    I'm not sure how I'm able to update my clean nand backup to FW 6.2.0 once it has been restored to my Sysnand since I have 8 fuses busted, can you guys help me out?

    *edit*

    *I just run a nand backup of my currently installed firmware for the hacked state of my switch and it says it's on version 9.1.0.

    Firmware version found: 9.1.0 (no exFAT)
    Most recent boot: 1980-01-01 00:00:00

    Checking the SD of my that my CFW runs on and the fact that ChoiDujourNX is on that sais SD, I assume that the previous owner updated to FW 9.1.0 using ChoiDujourNX. I do not think this influences my initial question, but to be sure I decided to provide this information as well. I do not think it changes anything to my initial question.*

    The guides I've managed to find on my own;

    Updating/Downgrading Manually switch homebrew guide

    Then the next step would be setting up CFW alongside my OFW, a topic of which I'm completely in the dark at this time.

    If you guys could help out that would be great!
     
    Last edited by b2theram, Oct 19, 2020
  2. x3n0

    x3n0 GBAtemp Regular
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    I would not try to downgrade because the big risk of an accidental brick. Just remove everything as far as you can. Setup emunand for offline stuff, use OFW as normal and hope for the best.
     
  3. b2theram

    OP b2theram Newbie
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    So just run the restore of my original Nand to sysNand, clear all the logs using hackdismount, and once restored update the sysnand to the most recent version through Nintendo servers once I've booted the OFW through hekate?
     
  4. x3n0

    x3n0 GBAtemp Regular
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    As I understan you will downgrade to 4.1 with a fusecount of 8. That will soft brick your system. Assuming downgrading went ok you wil then upgrade to 6.2.0 using Choi. Assuming that went ok you are going to do a clean that would never be complete. And use your not perfectly cleaned OFW for legit stuff.

    I don't understand why you would be better off with this risky plan over doing nothing to OFW and just update.
     
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  5. b2theram

    OP b2theram Newbie
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    First off, I really appreciate your answers, you're helping me out a lot already :)!

    That was my initial question. I'm reading a lot up on forums these days, so I was a bit uncertain regarding the restore of my original nand being sufficient to clean my Switch (I'm a noob, but at least a noob who is careful prior to doing anything stupid and asking people with experience what the best option is). That's why I deemed it necessary to follow the risky path described in my original post.

    As I understand from you and various other information on the internet, I just need to restore my original NAND 4.1.0 backup and update from there directly with Nintendo. Plain and simple as that and hope for the best from there on out.

    I did not realize that it would be so easy. The precious owner of my switch did not bother run two separate environments (OFW/CFW) alongside each other, he just wanted to play free games offline. In retrospect I think the below path is the one I should follow:

    - Restore my original nand backup using the hekate emmc restore function;
    - Boot into my restored sysnand stock firmware 4.1.0 using auto RCM and hekate since I have 8 fuses busted;
    - Update my system software with an active internet connection without the SD-card inserted.
    - Run a new NAND backup of my clean sysnand updated to the most recent version of FW and label the backup with the FW version.


    Then once my Nintendo is stock and updated to the most recent version;

    - Create a new Emunand on a freshly formatted SD card and configure it with the software of my choosing.

    If I'm not banned in a decent matter of time I can deem myself a happy customer and proud owner of a hacked switch with the ability to play online as well =).

    I think that's it, could you let me know if I understood your suggestions correctly?

    Thanks!
     
    Last edited by b2theram, Oct 20, 2020
  6. Hayato213

    Hayato213 GBAtemp Guru
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    4.1.0 expect 5 burn fuses, if you restore 4.1.0 without a custom bootloader you probably won't be able to boot, you can restore it but you would be forced to use a custom bootloader like Hekate to get it to boot. As for firmware updating, don't use ChoidujourNX if you plan to play online, ChoidujourNX requires CFW.
     
    Last edited by Hayato213, Oct 20, 2020
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  7. b2theram

    OP b2theram Newbie
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    The custom bootloader is not an issue. I want to run Stocksysnand and Emmunand alongside each other, so I would require a custom bootloader anyways. I was a bit jumpy on whether I would have a clean sysnand when restoring my 4.1.0 backup to my switch. Since that poses no issues, I will restore the backup and update the 4.1.0 FW to the most recent one and that should in theory enable me to enjoy OFW and online play again.

    I'm going to take the risk anyways, I'll be sure to post the results here for future reference so other people can benefit from this as well in case it works out the way I hope :P
     
  8. Hayato213

    Hayato213 GBAtemp Guru
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    Just to take note it might not even boot with hekate as it firmware is lower than expected fuse count, typically you can get away with 1 burn fuse, in the +3 margin the system might panic, anyway good idea that you made a backup of the current NAND and boot0/1 just in case.
     
    Last edited by Hayato213, Oct 20, 2020
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  9. b2theram

    OP b2theram Newbie
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    Thanks for pointing that out. I checked this of course, and I read up on numerous people who've managed to update OFW using hetake to boot into < firmware versions and have 7/8+ fuses busted and came across no people who had issues in following this path to revert back to stock.

    So I guess there's only one way for me to find out :P

    Thanks for you comment, much appreciated!!
     
  10. b2theram

    OP b2theram Newbie
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    Alright, I succeeded in restoring my original Nand and reverted back to stock, updated through the Nintendo servers and am able to enter the Eshop without any issues. Guess now it's a waiting game to see if I get banned.

    I'll be sure to leave a step by step guide once I've installed CFW on emunand as well to detail every step I've taken to get where I want to be in the end.

    Thanks for you help so far guys!
     
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