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How to downgrade Switch firmware from V6.2.0 for Homebrew and CFW?

It's widely known the latest Nintendo Switch firmware 6.2.0 blocks All working CFW for the previous Switch system versions, so to any Switch CFW user, Don't update your Nintendo Switch console at least for now and if you already did it accidently, maybe you can find a Downgrade Guide here.

Why the Nintendo Switch 6.2.0 blocks CFWs and is it permanent?

Per SciresM:
hahahaha new fw changed key generation
in a huge way
anyway gonna be some effort to break.
no cfw support for [however long it takes to crack] + [however long it takes to update]
N did good.
We're working on it. ETA is who knows, hopefully soon.
It's not a certainty, something clever could be thought up at any time, but I would prepare yourself for potentially quite the wait, re: 6.2.0 key generation.
Because on this new Switch update, there is a huge change on the Key generation, according to the famous Switch hacker SciresM, this change blocks our method for booting CFW on the Switch sysnand V6.2.0, all the Customer Firmwares, including the SX OS, Atmosphere, REINX, RAIJX and other ones, they are not working any longer on the latest Nintendo Switch system version console.
But don't worry about it too much. The new encryption keys will get released, this Patch isn't Permanent, because the hardware exploit for Nintendo Switch is still there, RCM mode is working on Nintendo Switch V6.2.0, Nintendo just blocks our current way to load CFW on V6.2.0 Switch, sooner or later, the SciresM will make it work again.

Is it possible to downgrade Nintendo Switch V6.2.0 and how to do?

The answer is Yes if you restore your nand backup or use the ChoiDuJour on your Switch, otherwise, there is no method for you to downgrade from Nintendo Switch 6.2.0 system version. What's the ChoiDuJour? It is Converting Nintendo Switch firmware update packages to installable images/files that can be transferred to the device itself. That's to say, we can install it to install any firmware version to the Nintendo Switch.
Then how to use the ChoiDuJour to downgrade the Nintendo Switch V6.2.0? Here's the rough guide.
Firstly, you should prepare all these things.

  • a PC running Windows capable of sending RCM payloads to your Switch
  • a working internet connection on that PC ;)
  • a way to send the payloads via USB-C, like TegraRcmSmash
  • latest release of HacDiskMount
  • latest release of memloader
  • latest release of biskeydump
  • latest release of ChoiDujour
    get them from https://switchtools.sshnuke.net
  • some recent-ish version of Hekate (the ones post sleep fix should work fine), you can get prebuilt binaries from either: https://github.com/rajkosto/hekate/releases or CTCaer's fork here: https://github.com/CTCaer/hekate/releases
  • something that can write raw binary files to Physical Disks, like:Etcher: https://etcher.io/ or Hex Workshop: http://www.bpsoft.com/downloads/ or dd for windows: http://www.chrysocome.net/dd (this guide will only cover Etcher, if you know what's happening its easy to use the other two)
Then, Do the following Steps.
STEP 1: MAKE A BACKUP OF YOUR ENTIRE RAWNAND AND BOOT0/BOOT1 !!!
STEP 2: GET YOUR BIS KEYS (required for using HacDiskMount)
STEP 3: DO NOT LOSE YOUR BACKUP!
STEP 4: PREPARE YOUR microSD for memloader
STEP 5: ACQUIRE THE UPDATE YOU WISH TO INSTALL
STEP 6: ACQUIRE A FULLY POPULATED hactool KEYS file
STEP 7: GENERATE the files/images to be transferred to the console via ChoiDujour
STEP 8: TRANSFER the firmware to your Switch's eMMC:
  • : PREPARE FOR TRANSFER
  • : TRANSFER BOOT0
  • : TRANSFER BOOT1
  • : Initial eMMC SETUP in HacDiskMount
  • : Transferring the BCPKG2 images
  • : Transferring the FILES for SAFE
  • : Transferring the FILES for SYSTEM
  • : Transferring the FILES for USER
STEP 9: LAUNCHING THE FIRMWARE FOR THE FIRST TIME
STEP 10: LAUNCHING THE FIRMWARE ANY OTHER TIME
STEP 11: ENJOY
This is not a complete Switch firmware 6.2.0 downgrade guide, the full tutorial is too long, so you should follow via this link https://gbatemp.net/threads/how-to-install-run-any-switch-firmware-unofficially-without-burning-any-fuses.507461/.

Without downgrading the Switch 6.2.0, how we can hack it to play free games?


Yes, for the Switch Emunand users, you are so lucky, because CFW still works if your emuNAND is lower than 6.2 and your NAND is 6.2. That's because 6.2.0 only blocks CFW and not the stock OS. You can always boot up the system without cfw on 6.2.0, just not with cfw.
So which is the best Switch CFW supports Emunand function? Without any doubt the answer is SX OS from Team Xecuter. It's the Switch CFW supports All funtions we need and it's the only CFW supports Switch game card emulating.
In 2018, only with the SX OS CFW, we can play free Switch game card roms, cheat in games, load roms and homebrew from the external USA and install emunand to Switch, so if you want to hack the Nintendo Switch V6.2.0, just get yourself a SX OS ode or buy a SX Pro toolkit to run the SX OS CFW on your Switch.
For now, you can buy the SX OS PRO from Mod3dscard.com, it is offering the Best price for SX Pro and the fastest delivery to SX OS code via Paypal, just go there and have a try.

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