[Tutorial] Update EMUNAND via ROM (Current max 9.4-5)

Trimmed roms can still update your emunand, I just did so just now. Regular trims are fine, it's a SUPER trim that will remove the update from the rom. I personally trim ALL my roms besides card2 games, and everything works fine. The overall space it saves is worth it.

I just used Xenoblade Chronicles 3D (Trimmed) to update my emunand to 9.4, thanks for this guide. I almost forgot about using roms to update emunand. I was trying to use cia from 3DNUS but it just doesn't work with N3DS.

 

You should mention that an update from a ROM is not a FULL system update, certain parts will not be updated, you know when a system is updated from a rom, the last digits mostly are different then the OFW
9.2.0-20U updated with a rom to 9.5 will be 9.5.0-20U
9.2.0-20U update with System update to 9.5 will be 9.5.0-22U (or 9.5.0-23U) (Now you need to use 3DNUS for that)

Your screenshot example is 9.2.0-10U, indicating you are updating a 4.3.0-10U / 4.4.0-10U / 4.5.0-10U System with a rom to 9.2.0-10U instead of 9.2.0-20U

While using 3DNUS to update your emunand is equal to a full system update
Maybe you should aswell write a guide on how to do it with 3DNUS on this thread so people can see both on the same page and compare and decide for themself on how the will do it.

 

There's two programs you can use for trimming 3DS roms with no problems:

1. CTR (Crappy Tiny Reader)

2. Tokyo Rom Trimmer (Recommended)

I suggest Tokyo Rom Trimmer, it can trim all your roms at once. Just be sure not to trim card 2 games: Pokemon, animal crossing, tomodachi Life.
You can untrim roms with CTR, but there's no need to untrim a rom once trimmed, I can guarantee that.
On CTR, there'a an option to (Super trim), which removes the update from the rom. This is the only way to remove the update from the rom, you can pretend it doesn't exist.
There's absolutely no down sides to trimming roms. Not like DS roms and PSP iso's back in the day.

 

FWIW, this also works to update SysNAND if you use the old Gateway Omega 2.2 Launcher.dat and "update" (downgrade) your Gateway red card. It *WILL* brick if you do it with a newer Gateway launcher. You have to hold "Up" when launching Gateway mode on an SD card with no EmuNAND partition. I don't understand why it doesn't work in newer Gateway launchers, but I tried it out on a hardmodded 3DS XL and, sure enough, it bricked just like people told me it would.

 

sorry to necro the F out of this :x
I just upgraded my friend's emunand from 9.0 to 11.2 (New3DS AUS) with a Poochy/yoshi EU rom, so, thanks for the tutorial

can you really confirm I'll brick if I update his sysnand to 11.2 with the same method ? I really was under the impression I could do it. any other way for me to upgrade his sysnand to 11.2 ? I just want to make a back of such a setup if he really wants to use his GW card, then I'll do a full B9S install with Luma and leave his 3DS like that.

Thanks for the help!

EDIT : just to answer my own post, I symply did the B9S installation through OCS while on 9.0 synand and 11.2 emunand, ans transfered my emunand to sysnand, then installed gateway support with https://gbatemp.net/threads/tutorial-using-luma3ds-gateway-on-b9s.431691/, worked fine, now I'm going to back it all up and and remove GW and upgrade to the latest sysnand fw^^

 

Hi.
I followed the guide and to my knowledge I did not deviate from it but my 3ds won't turn on (both screens black, blue light on) after the update was applied. I was wondering if I bricked my 3ds? I was using gateway on a system which was downgraded to 4.5 and booted into emunand which was also 4.5. From there I ran a game using the red card menu which prompted the update. After updating and restarting I started getting the problem.

Could it be just a freak of nature coincidence where something completely unrelated somehow happens to happen at the same time as I do this? Most likely not but it got me wondering what could it be that I do wrong. I don't think I updated the SYSNAND for the simple reason that I booted into gateway mode before updating (and if I was in SYSNAND clicking on select wouldn't bring up the game menu anyways right?).

One thing I remember was that holding up while the gateway mode was booting didn't seem to change anything from normal procedure.

 

Maybe you didn't create an emunand.
I reccomend you to recover using an ace3dsx

 

Im confused. If I didn't set up an Emunand then I wouldn't be able to access the red card menu anyways right? Also I have a normal DS flashcard that came with gateway could I use that instead?

 

Nah you need an ntrboot flashable flashcard.
You can access the red card menu in sysnand