It appears that users are being banned from 3DS online services, en masse. There's no direct cause right now, and seemingly no linking factor. This post is meant as an announcement for users, to be wary, and that GBAtemp will keep you updated as soon as more info rolls in. If you have been banned, please post in the thread below, and we will try to keep tabs on the situation. To be extra sure, it can't hurt to turn off your 3DS's wireless capabilities, so you might as well do that for now.

Edit 1: it appears that e-Shop access isn't restricted if you are banned.

Edit 2: A caller to Nintendo reported that the company said this ban is due to "unauthorized software usage".

Edit 3: @LinkSoraZelda is collecting info. Contact him if you are banned.

Edit 4: Click and fill this out if you were BANNED.

Edit 5:

[11:28:19 PM] Clector: Curiously the page of that error in Nintendo Support website used to have this:Error Code: 002-0102 Situation: You receive the error code 002-0102 when attempting to connect online. What to Do: If you continue to experience this issue, please contact Nintendo by calling 1-800-255-3700. Representatives are available from 6 a.m. to 7 p.m., Pacific Time, 7 days a week.
[11:28:44 PM] Clector: Now it says this: What to Do: If you are experiencing this error code, your Nintendo 3DS family system has been banned due to unauthorized system modifications, play of unauthorized versions of one or more games, and/or connecting to the official game servers in violation of our terms of service. This ban is effective immediately and requests to remove the ban will not be processed.

Thanks to @Joom

Edit 6: Aurora Wright is taking another poll here

Edit 7: Not a lot is known but

There are bans happening, they are happening in all regions.
All models in the 3ds family seem to be candidates for banning.
There is no indication they will be anything other than permanent.
A game or DLC may end up being a cause but there is no one game or DLC that ties banned users together.
The cause or causes are as yet unknown, though it does seem to be related to modifications. Reports of unmodified consoles being banned are as yet unproven.
The banning is tied to something you can modify, thus you can unban. Doing it while the causes are unknown is likely only going to burn a working token though.
There are semi public tokens out there, Nintendo knows how to browse a forum as well as you so don't be surprised if they also get banned.
It does not seem to be limited to a given base firmware version, it does not seem to be limited to any one custom firmware type. There is some speculation that older hacking methods are not being hit as hard but nothing to confirm this yet.
The data collection could have happened this morning, or it could have been months in the making.
A simple check to see is checking your friends list, by itself it will not ban you.
Some are turning their wifi off. It is doubtful this will be of much use and being banned does not seem to come with any downsides that wifi being off will not also mimic.
You may have escaped a ban thus far but it could happen at any point. It could be that they stop in the future, it has happened on other consoles, but you would be living in hope rather than any particularly well founded logic.
The bans are done on the side of Nintendo's servers rather than your 3ds so there is also that.

If you hack your devices/games then their online functionality may be troubled. This has been known for decades, Nintendo seems to have finally caught up with that.

Please continue to share information with the thread or the links in previous edits.

Update 5/30

HOW TO HELP AVOID BANS (we think)​

If I was to guess from the information we have gathered since the ban wave, it seems likely that they are looking for TitleIDs that don't exist. Homebrew shows up in the activity log as the Download Play app, and fake CIA's show up as just ??????. That last one is what I'm guessing they are looking for.

If you are not banned yet or before you unban yourself, go into your friends list, choose settings, and turn off the option to "show friends what game you are playing." This will prevent you from playing games online with friends, so turn it back on when you wanna game with someone, but ALWAYS keep it off when running custom CIAs. Next, go into system settings -> internet settings -> spotpass, and turn off BOTH options. One is auto download software, the other sends system information to Nintendo. Also, make sure you don't have your favorite title set to something stupid like FBI or any other non-Nintendo CIA.

Its VERY likely that these options are what tipped off Nintendo, but we aren't 100% certain yet. The amount of banned people that had one of these options turned on was over 80% for each. If I was to assume that some of those people overlap, its very possible (but not confirmed) that 100% of banned people in the survey had at least one of those options turned on. I personally had all of them off and I have TONS of reasons for Nintendo to ban me.... yet I am not banned (yet).

Another bit of advice: Only run custom CIAs when offline, and after you close them, run a "legit" game like Smash Bros. or something before shutting down or going back online. This way your most recent title won't show up as a fake CIA

Current Theories as to what causes a ban
​

* SpotPass Settings: 8 users out of 46 users that were banned have SpotPass completely shut off, or SpotPass only (no friends list visibility)
* Firmware Version (Luma, Nintendo): Literally all reports ranged from 10.2+, I can get exact numbers for this if you'd like, but all firmwares were affected.
* Firmware Type (A9LH, B9S): 44 of the 126 B9S users that answered were banned, pattern was mirrored for A9LH users as well.
* Homebrew Titles such as FBI, HBL, Luma Updater, Themely, and freeShop: Literally about 98% of users both banned and unbanned had some combination of these applications installed. However the common ones were: FBI, HBL, LumaUpdater and NTR.
* Save Modification: Equal amounts of users on both sides have reported save modification in some form, either with PKSM or another save editor
* System Transfers: 188 users said that they had not previously system transfered, 61 of those users were banned; 16 users said they transferred from a hacked console, only three of them received a ban; 13 said they transferred from a stock system and likewise were banned. The rest of our sample did not answer this question.
* Activity Log Information: A majority of those who have not been banned have said they had NOT cleaned their activity logs. I can get exact numbers for this too on request.

This information is just what I've found. Like I said, there could be variables or things we haven't even checked for yet. But these are things that I feel should be disproven, at least with the current dataset we have.

• From the information that we've gathered from some people that have used a packet sniffer such as WireShark, the following data is sent to Nintendo's online gaming servers as soon as the 3DS connects to the internet:
  • Amount of time spent online (timer stops when either the system is disconnected from the internet, or connection drops out, then starts the timer again in a new session when it reconnects to the internet).
  • The game being played and amount of time spent on it during that session.
  • The console's unique hexadecimal ID used in the LocalFriendCodeSeedB, along with it's RSA-signed signature.
  • The console's serial number in which is broadcasted from the SoC and is hard coded in the SoC.
  • Friend Code generated on the Nintendo 3DS system, if one has been generated.
  • Internet connection status (either online or offline).
  • The Nintendo Network ID, if there is one linked to it.
  • Even if the sending of SpotPass Information is switched off, or even hiding your currently playing games. It does not prevent the system from sending currently playing information to Nintendo's online gaming servers, it only hides it from your friends in your friend list (like being invisible on the forum, while mods and admins can still see you). Why? Because even people without a Friend Code on their system have been getting banned too!

• The following data is NOT sent to Nintendo's online gaming servers:
  • The data from the Nintendo 3DS's Activity Log. Oddly enough, while Nintendo does explicitly state that they collect Activity Log data, they're actually referring to their own server's Activity Log, which always tracks every console's online activity, and keeps a record of them that is stored forever. And is only collected in increments of data through a timer and a currently playing list.
    
  • Games or apps that have not been played, regardless if they're legitimate or not. You only get tracked when you're online and using that game or app.
  • Using games or apps while offline. Even though it is stored on the 3DS console's Activity Log, that data is NOT sent to Nintendo's online gaming servers.
  • Custom Firmware. Though we can't rule out the possibility of them releasing a 3DS update in the future that adds such function to collect MD5 hashes of files and FIRM data and send them to Nintendo online gaming servers (which would also be updated in a maintenance).

• Things that people think what happens with consoles, but really doesn't:
  • "LocalFriendCodeSeedB is transferred to the system upon doing a system transfer". This is false, the LocalFriendCodeSeedB remains on the system and does not move to another system.
  • "The console generates a LocalFriendCodeSeedB upon first startup". Again, this is false, the LocalFriendCodeSeedB is made during the manufacturing process at Foxconn. It is generated at the factory, flashed to the NAND flash memory storage, then created as an account on Nintendo's online gaming server and Nintendo eShop server immediately when being manufactured. It is absolutely impossible to generate a LocalFriendCodeSeedB and be able to connect to Nintendo's online gaming server and/or Nintendo eShop server, even if you knew the RSA generation key for it. You'd end up with Error Code 002-0102 "This console's online services have been restricted by Nintendo" if you even tried (the error can either mean two things: The hexadecimal ID doesn't exist on the server, or the request to access the hexadecimal ID has been denied which in other words... banned). So a LocalFriendCodeSeedB generator will NEVER happen! Because it's not worth doing, if it can't connect.
  • Switching off "Currently Playing" information. Once again, this does not hide your online activity from Nintendo's online gaming server, it only hides it from your friends.
  • Switching off SpotPass. Nope, this too doesn't hide your online activity from Nintendo's online gaming server, it only opts-out of receiving SpotPass data, sorry.

So pretty much the bottom line is, if anyone has been using custom apps and/or titles not installed through Nintendo eShop while online in the past, guess what? You're screwed! And it is only a matter of time before your console's unique hexadecimal ID in the LocalFriendCodeSeedB is banned from Nintendo's online gaming server. This will mean, your console can't access the Friend List or play any online functions in games.

If you have been online while using custom apps and/or titles not installed through Nintendo eShop and haven't been banned yet, that's because Nintendo hasn't caught up to you yet. They're still going through each unique hexadecimal ID's Activity Log on their server, and by Activity Log, I mean the Activity Log on their server, not the 3DS console's activity log. And it will be only a matter of time before you're banned too.

Thanks to @Platinum Lucario @MadMageKefka and @ShadowEO !

 

[birgeer]

n3ds sys11.4/Latest Luma B9S,

still not banned haven't connected since the bannwave hit but did today and still nothing luckly, only thing i can think of i did different is when i installed b9s i didn't do anything in the installing fbi steps since i already had it installed from ar9m which i upgraded from 2 days before the banwave (first time i touched the 3ds since January, after i was done with pokemon sun legit, and moon which i installed 2 weeks before launch and never got banned for it)

iwe never played any fe games and barely use online features but always online, never used freeshop of ntr cfw, cheated of modified any saves.

Turned off data sharing the day the bannwave hit, have had the the n3ds since march 2015 or so, installed ar9m last February and have had wifi spot pass everything on since.

BTW: The day the bannwave hit after i turned of wifi i installed around 80+ gb/gba VC games i made myself with that program, then turned the wifi on today, been playing pokemon pinball r/s this morning and still not banned

 

[novren]

n3ds Ofw 11.4/Latest Luma B9S,

still not banned haven't connected since the bannwave hit but did today and still nothing luckly, only thing i can think of i did different is when i installed b9s i didn't do anything in the installing fbi steps since i already had it installed from ar9m which i upgraded from 2 days before the banwave (first time i touched the 3ds since January, after i was done with pokemon sun legit, and moon which i installed 2 weeks before launch and never got banned for it)

iwe never played any fe games and barely use online features but always online, never used freeshop of ntr cfw.

Turned off data sharing the day the bannwave hit, have had the the n3ds since march 2015 or so, installed ar9m last February and have had wifi spot pass everything on since.

If you've got Luma you have cfw, not ofw. Just an FYI.

 

[birgeer]

If you've got Luma you have cfw, not ofw. Just an FYI.

ah ok, its just that i the day before the bannwave i removed the emunand so i only have sysnand, thats what i meant

 

[Xe-rom]

so i guess i'll wait it out until this weekend...?

 

[Concorde]

Okay, so I tried to analyse freeShop and it's source code to see how it works。
To prevent any system information leaking, I blocked the following address:

127.0.0.1 ecs.c.shop.nintendowifi.net
127.0.0.1 cp3s-auth.c.shop.nintendowifi.net
127.0.0.1 cas.c.shop.nintendowifi.net
127.0.0.1 ccs.c.shop.nintendowifi.net

# where the game data stored
#127.0.0.1 ccs.cdn.c.shop.nintendowifi.net

127.0.0.1 ias.c.shop.nintendowifi.net
127.0.0.1 pls.c.shop.nintendowifi.net
127.0.0.1 npul.c.app.nintendowifi.net
127.0.0.1 cp3s.cdn.nintendowifi.net
127.0.0.1 eou.cdn.nintendowifi.net
127.0.0.1 npdl.cdn.nintendowifi.net
127.0.0.1 l-npns.app.nintendo.net

# Blocking the following will cause inability of online playing
#127.0.0.1 nppl.c.app.nintendowifi.net
#127.0.0.1 nasc.nintendowifi.net
127.0.0.1 api-us.olv.nintendo.net


When you request a download, freeShop does the following things:
1. Read and parse the corresponding title and titlekey from the database.
2. freeShop has a built-in hardcoded Ticket Template, freeShop copy the template and fill with titleID, titleVersion and titlekey in order.
3. Construct TMD and content URL with the following format:
http://ccs.cdn.c.shop.nintendowifi.net/ccs/download/[TITLEID]/tmd
http://ccs.cdn.c.shop.nintendowifi.net/ccs/download/[TITLEID]/[CONTENT-ID] ..
for example: TMD for Monster Hunter 4g DLC
http://ccs.cdn.c.shop.nintendowifi.net/ccs/download/0004000E00126300/tmd
4. Fetch seed from kagiya-ctr.cdn.nintendo.net
5. Call internal routines to install tickets seed and tmd...

so what we can know is the content server do not know your 3ds device information
I am not familiar with Ticket structure, If the ticket structure is different among devices, I think that hardcoded Ticket Template may be a problem??

Also, I found something interesting: when your device active with an internet connection, the device will keep talking with 52.196.212.20 (I can't find DNS record for it), the device send a 12byte message to the server, then the server reply with a 14bytes message, here's how my device talking to that server:

1: DEVICE: af:a1:44:00:ea:7e:84:c0:1d:01:00:67 SERVER: a1:af:94:00:a7:8e:ef:fd:81:01:00:00:00:91
2: DEVICE: af:a1:44:00:ea:7e:84:c0:1d:04:00:6a SERVER: a1:af:94:00:a7:8e:ef:fd:81:04:00:00:00:94
3: DEVICE: af:a1:44:00:ea:7e:84:c0:1d:05:00:6b SERVER: a1:af:94:00:a7:8e:ef:fd:81:05:00:00:00:95

Looks like a 3DS play time counter, but I have no idea what exactly is...

UPDATE: With the hosts above applied, you should still able to use online gaming functions, except eShop and other nintendo service related. Tested with Pokemon Moon, I can connect to Game Sync, connect to the internet in the plaza with those address blocked. Note that nppl.c.app.nintendowifi.net and nasc.nintendowifi.net can collect your login information, as I said before, all games installed from freeShop share the same template of Ticket, thus it's highly not recommended to getting online with pirate games!

Do you know if CIAngel uses the same behavior regarding ticket construction? I've been using it (a bit liberally tbh) but haven't been banned so far. I've had WiFi on while playing single-player mode in some CIAs, but none of the ones that connect without asking, like the Pokemon games.

 

[Deleted User]

Do you know if CIAngel uses the same behavior regarding ticket construction? I've been using it (a bit liberally tbh) but haven't been banned so far. I've had WiFi on while playing single-player mode in some CIAs, but none of the ones that connect without asking, like the Pokemon games.

Unfortunately, sort of same, and that template in the freeShop is a copy work from CIAngle at all. (The author has comment in that source code)

 

[nl255]

You can't... once you are banned using a "clean" friendscode is your only choice... but you'll be banned again since we still don't know the traps Nintendo put in its firmware to know if you're using a modified firmware (it has plenty of ways to do so since firmware has control at the lowest level).

I think the best choice right now is to wait and not unban oneself; we don't know what caused the ban wave in first palce, and neither if it is only the first one, so you would just be banned again, maybe even being flaged by the fact that a banned system was again online whrn it should not. Patience is the answer (and 42).

I would only say that if you were planning on using a spare/private localfriendseed to unban yourself as there is really no downside to using a public localfriendseed as public seeds are going to be banned eventually regardless of what you do. So might as well use one of the currently unbanned public ones to get some online play in before it is banned (though I would suggest that anyone who uses pokemon bank go in and retrieve everything in it just in case future banwaves start including nnid bans, and that goes for both public lfsc users and those who haven't been banned yet).

 

[Awakened_Xander]

I think the best choice right now is to wait and not unban oneself; we don't know what caused the ban wave in first palce, and neither if it is only the first one, so you would just be banned again, maybe even being flaged by the fact that a banned system was again online whrn it should not. Patience is the answer (and 42).

Some 4chan users who switched to a public LFCS after they got banned reported that they haven't been banned again since.

Well...at the time of typing this.

 

[borka]

Well, interesting side-effect of the last banwave is potential hit on the pre-owned console market.
You can not be certain that the console you are buying is "clean", even if it is not banned (yet). And that its friend seed is not extracted and sold separately.

Scary times ahead.

 

[RedBlueGreen]

nop ... i reinstalled my old original NandBackup ... that comes never in contact with freeshop ... even if i delete all unused tickets with tiksweep this one is still downloadable in eshop

That's strange. Maybe you got a console that was originally bundled with it? not sure if those are things but it's the only thing I can think of.

 

[novren]

ah ok, its just that i the day before the bannwave i removed the emunand so i only have sysnand, thats what i meant

But sysnand with Luma right? Then it's cfw.

I used to have emunand too. Good (slow to boot) times.

--------------------- MERGED ---------------------------

Well, interesting side-effect of the last banwave is potential hit on the pre-owned console market.
You can not be certain that the console you are buying is "clean", even if it is not banned (yet). And that its friend seed is not extracted and sold separately.

Scary times ahead.

Yeah, people will need to try the connection before buying them.

 

[borka]

people will need to try the connection before buying them.

The console can be compromised (say, with running homebrew and out-of-region), but not banned yet. Simple online test will not help.

 

[Manuel0]

I have 3 3DSes, one of each region and all with CFW. Interestingly only one of them got banned (EU one) even though that's the one where I purchased by far the most games on and only used the CFW to backup save data. I did use that one to cheat in Kirby Clash though.

 

[suzsuzuki]

I have 3 3DSes, one of each region and all with CFW. Interestingly only one of them got banned (EU one) even though that's the one where I purchased by far the most games on and only used the CFW to backup save data. I did use that one to cheat in Kirby Clash though.

same here

 

[Windylacine]

I have 3 3DSes, one of each region and all with CFW. Interestingly only one of them got banned (EU one) even though that's the one where I purchased by far the most games on and only used the CFW to backup save data. I did use that one to cheat in Kirby Clash though.

how long since the last time you played your EU 3DS console?

 

[Manuel0]

Any further ban repor?

how long since the last time you played your EU 3DS console?

I just checked all three of them. I have all of them online 24/7 basically.

 

[nl255]

Some 4chan users who switched to a public LFCS after they got banned reported that they haven't been banned again since.

Well...at the time of typing this.

Though keep in mind public seeds will inevitably get banned sooner or later no matter what.

 

[Manuel0]

I'm just glad they didn't decide to ban NNIDs. They could technically do that, right? And they could also ban online on Wii U and Switch as well with that, couldn't they (on Switch at least if you have linked your NNID to your Nintendo Account)? That's pretty scary.

 

[NDTube04]

If anyone hasn't please contribute to the survey below! New questions being added every suggestion! Thank you to the 153 users that have contributed to our data!

https://goo.gl/forms/8t5WiRE45dBTgLG73

 

[Chakratos]

Here a bit more proof.

You answered yourself from the wrong account on the last one :o
I mean, you ask "him" if you could post censored images and then immediately wrote "No Problem!"

Suspicous