hi :P I'm new here, and tired, so I'm sorry if I've messed something up! I recently bought a copy of My Secret World for the DS from a second hand store. It's a diary game aimed at tween girls, I enjoyed the idea of using this random game as my actual journal so I bought it. When I opened it on my 3DS, there was an existing save file (last opened 26 December 2013), but I couldn't access it because I didn't know the 4 digit PIN or the security question. I tried a bunch of super common PINs (like 0000, 1234, 9876 etc) but no luck. I erased the file (my new diary is going strong, it's actually a fun little game), but before I did I saved a backup with Checkpoint of the original save. I'm curious if there's a way of getting around that lock, without just straight up brute forcing? Is there anything I could use to look into this more? Honestly I'm most interested in the process (if it can be done) than the actual diary.

Help on 3DS prices...

ghosty656 · 2026-06-13T17:42:57+00:00

Hello, I like handhelds and Pokemon so I am of course looking for a Nintendo console I can buy. Naturally I had gotten the latest console back in 2018 but my experience was less than stellar because of a plethora of reasons(stick drift, patched console, bad pokemon games!!). Lately though I've kind of fallen in love with the 3DS, It just looks so cool and innovative and had a great game library too not even mentioning the modding community. It being an extremely old console I'd expected for it to be cheap but Its like 300 bucks. I can kinda see why, its a great console and I guess something happened for it to be relevant again. But I want to get this console nevertheless so I wanted a bit of advice on what to do. Should I buy it now since the prices will continue to rise or is this just a trend and shoul I wait for the prices to lower again? Many thanks.

Can't open RomFS or ExeFS on dev app

rvtr

Nintendo DS hoarder

Member

Level 18

Feb 25, 2022

Figured it out! You have to decrypt with this tool (gm9 and other tools don't like this dev encryption) and then you're free to check RomFS and ExeFS all you want. You'll have to re-encrypt to retail if you want to install dev apps however.

Original question:

Sorry if this is the wrong place for this.

I recently got some developer "SystemUpdaterForCTR" CSUs and CIAs, and I wanted to get the firmware from RomFS. When I mount the apps in gm9 and open RomFS (and ExeFS), I get "invalid directory object". When I get gm9 to verify the apps, it doesn't see any problem with them. I'm not sure what to do. I know for a fact that there's nothing wrong with the files, 'cause they're straight from Nintendo (again, my apologies if this is the wrong place to ask about things like this).

I also tried decrypting them, but I get "decryption failed". Any ideas?

Last edited by rvtr, Aug 8, 2023

Can't open RomFS or ExeFS on dev app

Nintendo DS hoarder

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