Amiibo key files. Place that file somewhere where you will remember.
Amiibo key files bin), allowing you to use the same amiibo in multiple emulators, and allow you to modify traits of it that are currently not possible in Ryujinx like renaming it in Smash. I source most of my files and general file structure from u/ibraibra66. * only supported on iPhone ** requires amiibo key files iCloud Sync & Dark TagMo (version 2. You should then see messages scrolling past with each data page as it begins writing them. Once you see ***Scan tag***, place and hold your blank NFC tag on the reader/writer. The app will not show the new bin files and even shows the on that worked after I deleted that file. com/2022/01 Mar 12, 2021 · Save Page Now. There’s a video demo on its website, https://amii. Information for Etsy Buyers; Amiibo Discord! About Us Jul 2, 2023 · When creating amiibo files, including the character data and other relevant information, the key_retail. The newest amiibo bin file is Make sure your game of choice is booted up first and that the amiibo functionality is turned on in game. Information for Etsy Buyers; Amiibo Discord! About Us Dec 26, 2024 · Recently I've tried using Amiitool to decrypt my amiibo dumps from amiibac. bin files to train them and save progress now if you have the requisite key_retail. Use the Menu->Load key(s) file to load the key file(s) Use load tag to load an amiibo dump file, scan tag to scan an Amiibo. The last part is odd though. A PowerSaves USB reader / writer is only required to reset a Power Tag last used with PowerSaves. bin file, a locked-secret. Open amiibo settings panel and you trying to change the owner details or reset an amiibo will bring up a black screen with the prompt "Place Amiibo?" Once you have your bin file, login with a Twitch account by click the login button above, and upload the file. from files when you no longer have access to your physical collection. Reads . IMPORTANT: To decrypt and encrypt Amiibo data, you will need two master keys, commonly called unfixed-info. It also has an all-in-one bin file for Ally on iOS, a key_retail. If you have a key file, Ally collect and backup allow you to import the key file (one joint file or two parts of the key file) to activate the writing mode (it’s called dark side mode). Only Power Tag tokens are needed with TagMo. bin, and then in the retail. Bin file - raw data from physical Amiibo. I used the amiibo dump from amiibac as the input, the key file for the keys, and specified an output path, and made sure to specify whether to encrypt or In Settings, I can click on the "Import Keys", but when I select the files in the browser nothing happens. Sep 25, 2022 · As long as we can get the . Createa folder called "amiibo" in the sd root and put any amiibo dump files into it. Sharing them from the iOS Files app only sends one to Ally, but opening them all this way from within Ally does the trick. bin”. 1. Jul 1, 2021 · The Beginner’s Guide to Tagmo and Powersaves for Amiibo; NTAG215/Amiibo Cards Explained; Amiibo Bin Dumps. To dump your mii, simply load an amiibo, go to the Mii tab, and hit Dump Mii. The password is the name of that iso site. with all new amiibo releases continuously added. The backup amiibo folder is just what I titled the folder where I keep all of the bin files. keys", " title. Step 4: Converting it to an Amiibo Bin File with Amiibots. here is a tutorial and a video showing how to. Works perfectly. 0 of Smash Amiibo Editor, we now support registering amiibo, and dumping/loading your miis. Cause the one in the pinned post isn't working for me… Open Files App and navigate to Downloads folder, Press & Hold on amiibo file you want to write, should be a . That’s what we’re here for. bin file, and an unfixed-info. Now when you select the NFC function on the Flipper you can select which . com. User guide. 0:22 Powersaves for Amiibo2:19 TagmoAmiibo bin files are easy! Let's make you familiar with them. Reply reply Dec 6, 2024 · Once my Amiibo file is renamed, I drop my file into the "Data/amiibo" folder. Overwriting breaks recognition. Option to randomize UID, and make multiple outputs of the same source-file (for games like BOTW). bin file in their keys folder if they want to save amiibo data to one of the specific . Start the program: . The command would look like this: python3 AmiiboConverter. May 6, 2024 · To install, copy the 3DSX/SMDH files into 3ds folder. bin File ** PLEASE NOTE THAT THIS FILE CONTAINS COPYRIGHTED MATERIAL AND WILL NOT BE DISTRIBUTED ** Somewhere on the internet you can obtain a copy of the Amiibo encryption key required for AmiiPwn to function. With release 1. And, by the way, the file explorer used here while importing is not the one I use normally while using the phone. bin and select move & move it into Amii Folder Open Amii & click on Amiibos at the bottom then click on the Bin you want to write from the list A Amiibo Details page will open showing Amiibo ID, Name and Series, click on Write to Tag Tap and hold the + button on the amiibo collection page, Import from Files, then select all from whatever folder they are in. This post is (hopefully) fully updated with all amiibo bin files. Amiibo) tags. Name Last modified Size; Go to parent directory: MCAS Full Set - 15 February 2024. Tagmo. If sd:/switch/key_retail. This was created from scratch by using multiple applications. It's the same sound that you get if the bin file isn't valid. It is recommended not to delete or modify this file because it is a crucial component for the successful transfer of the amiibo data onto the ntag215 cards. you need to download the key bin files then the amiibo bin files. NFC. Reboot the 3DS. Write amiibo. Dec 26, 2024 · Install the file on the phone as usual. I got them one from off one of the threads over off amiibomb from a G-drive link, the other two from bin dumps website. bin files in a folder. then on Ryujinx go to Menu Actions Invalid Key File . You can edit this bin file to your Amiibo details Files app and iTunes file management Full Dark Mode support key_retail. Tried it on an iPhone 7. txt file intact, that’s all that matters. bin" files my the switch folder on my SD card, I have the first two "keys" files but not key_retail. You need to supply your own key_retail. (Encryption keys cannot be shared for legal reasons) Blank NTAG215 tags, Power Tags, Amiiqo / N2 Elite, or Flask (Sold separately) amiibo backups or amiibo. Import amiibo. Some people even share these BIN files so they can emulate Amiibo they don't personally have. To change an amiibo's mii, load the amiibo, go to the Mii tab, click Load Mii, and select the previously dumped mii file. key file click the end of the file and select paste. txt file to suit your needs; edit the values specified in regions. BIN file is even renamed to the name of the amiibo. Make sure NFC is enabled. If you have a key file, Ally collect and backup allow you to import the key file (one joint file or two parts of the key file) to activate the writing mode (it's called dark side mode). Create a folder called amiibo in the sd root and put any amiibo dump files into it. Save retail. bin file. Note: You won't need the . It's that easy! Still need help or have questions? This guide from Exion Vault goes more in-depth! Currently 2 amiibo are randomly picked for a match, though the system does favor selecting amiibo from trainers that haven't gone in a To use them: plug your FlipperZero into your computer- open your preferred file manager- navigate to /NFC/- drag-and-drop the Amiibo folder to there. bin」をファイルアプリを使って「AmiiBoss」ディレクトリ直下に配置します。また「書き込みたいamiiboのbinファイル」も同様に「AmiiBoss」ディレクトリ直下に配置します。 Dec 26, 2024 · Thanks to @HiddenRambler updating TagMo to use the keys and amiitool inside of it, this is really simple now. Simply download the file to where your other . So I put the card flat on the table, and point my phone at the middle of the card, at about a 45 degree angle, with the top of the phone touching the card and it seems to work every time. ) and game app-area (save-data), if present, are also extracted for the new format. Could just not be a valid amiibo file. bin in the correct folder, or you may need to restart the ui. Jan 4, 2022 · Following the steps listed here and adding the key_retail and relevant amiibo . Jun 14, 2021 · If you’re not sure what amiibo bin files are, this is the Complete Guide to amiibo bin files. bin file for the encryption. Nov 17, 2024 · Hi,i was just wondering where i can download the Amiibo Key File for Thenaya, Can anyone give me a link or tell me where i can find it please? =3 Thenaya Amiibo Key File Nintendo 3DS Search Here is a guide to adding key files to amiibot. You can read tags, save the data dumps, and optionally write those data dumps to a new blank tag. Jun 22, 2023 · Open the Amiibo editor(ui. Search the character you want, then "amiibo file". Optionally, you may also specify input and output files using -i [input] and -o [output]. Does recursive scan of folders, where it outputs the new files in the same directory, or a new with the same folder structure. Grab the Amiibo bin, make sure it’s in ProxSpace's “client” folder (at "ProxSpace\pm3\proxmark3\client" alongside “locked-secret. bin and rename the copy to retail. And it'd be worth reporting on the github with the necessary info they require. bin in a hex editor, select all and copy locked-secret. The Beginner’s Guide to Tagmo and Powersaves for Amiibo; NTAG215/Amiibo Cards Explained; Amiibo Bin Dumps. Search "amiibo key retail bin", download the file, put it somewhere you can find it later. PyAmiibo helps to read, modify and write dump files of Nintendo Amiibo figures. I got the amiibo key file that I needed and ran the program. Other than that, it should be able to read them fine without it. Our pages are pretty much identical (I took all the amiibo See full list on github. This collection is complete (up to date with all currently released amiibo) as of February 15th 2024. I tried many different folders for the bin files Strangest thing is I got it to work ones and wrote one tag successfully, than placed more bin files in that folder. Download them and put the files where you can find them later. You would need to convert them to nfc Nov 19, 2021 · The Beginner’s Guide to Tagmo and Powersaves for Amiibo; NTAG215/Amiibo Cards Explained; Amiibo Bin Dumps. Amiibank is an simple iOS app to manage MiFare NTAG215 NFC (e. BIN file as current amiibo and using a NFC programmer you can write the amiibo data, by example you can use iNFC or Tagmo for phones, Thenaya for the 3DS. Surf through the list of amiibos, select one, then click scan. Edit: Got it working however it is only displaying in terminal (I completely blanked that you need to use the retail key and then specify the amiibo) now I'm just figuring out how this output in the terminal will help me in any way decrypting the amiibo file for emulating an amiibo on my 2ds. Dec 26, 2024 · 3. Capture a web page as it appears now for use as a trusted citation in the future. This is a follow-up video and the Aug 22, 2023 · How to use amiibos in yuzu#botw #zelda #tearsofthekingdom #yuzu #emulation Scan this registered amiibo with your flipper then extract this NFC file and convert it to bin using this tool. On the front page of the website, there is a tool that allows you to upload . Tagmiibo guide (iPhone): https://amiibodoctor. If the programmed amiibo is on the database the . After you have followed the above setup, you just need two more files to start making your own amiibo: an amiibo dump, and the key file. key and locked-secret. The main data that makes up a amiibo is an "ID" and this id can be shared Nov 28, 2024 · If this is the first time you run the app. bin file on the SD card. bin file (can't give a link, just Google for it) which contains the encryption keys but once you have both Amiitool and key_retail. uk/ EDIT 2020-06-10 10:43 UTC Removing the key_retail. This post is (hopefully) fully updated with all amiibo bin files. I had the older version and I had the BIN files for the amiibo cards I wanted to make and it has worked before. Our pages are pretty much identical (I took all the amiibo bins from him), but mine has images for each of the figures. exe file. bin files also found in the TagMo_Installer folder in your Google Drive folder. The signing operation is a HMAC-SHA256 using the derived keys, and the encryption operation is AES128 in counter mode using a derived key and initialisation vector. The key is the concatenation of unfixed infos and locked secret keys. Dec 29, 2024 · I've seen people talking about needing unfixed-info. if you dont have a "% AppData %\Python\Python37\Scripts" folder or if there is no ssbu_amiibo. Dec 16, 2024 · Purpose: When it comes to Amiibo emulators, you can backup your Amiibo to a BIN file and then emulate it using a device like N2 Elite or reusable tags. Name Last modified Size; Go to parent directory: Animal Crossing/ 12-Mar-2021 13:36-Bayonetta/ key_retail. bin, locked-secret. Just start it up, select your local key_retail. bin” and “key_retail. amiibo binary key file(s). These are what the menu options all mean. Put the amiibo key file (same as used for Thenaya) into /amiibo_keys. I've checked all three files, they are 160 bytes. I keep getting “invalid amiibo key file” even though I’ve downloaded bin files from multiple sources. bin files. Launch the TagMo app, click the menu icon on the upper right corner > Load key(s) file, and select the unfixed-info. The Yuzu quickstart guide tells me I need the "prod. exe in the folder, we can try somethinge else. Once you've obtained this file Dec 16, 2024 · you can copy your "key_retail. Get the amiibo files you want. nfc-files, amiibo ID directly, or as a list from a . Information for Etsy Buyers; Amiibo Discord! About Us The data master key is used to derive several Amiibo-specific data keys to sign and encrypt unfixed/unlocked information of the Amiibo, such as the name, the owner, and game data. Please note that you can only write amiibo bin files back to amiibo chips of the same character and series. Go to amiibots. Place that file somewhere where you will remember. Preferably directly on your C: drive (but do NOT put it in the C:\Amiibo_Tool. at least i dont think it does but yeah A) Search for you amiibo and then click on the entry; Q) Is this legal? A) This is 100% legal, as it uses no keys or encrypted bins. We do not provide downloads of related files Cloning amiibo probably is infringement or illegal. Then it requires the key_retail. figures by scanning their NFC tags. If this is the first time you run the app. THESE FILES ARE NOT HOSTED BY AMIIBO DOCTOR. The downside to this is that these emulate the WHOLE Amiibo including the unique NTAG215 serial number. 6. the faq doesnt say anything about the key file not being the two other files for placiibo. Your Smash Bros series Mario may only be written to Smash Bros series Mario amiibo. I don't claim this is the best option, I encourage 面对正版amiibo被奸商炒上天的价格，自用自制amiibo不失为一个好的选择，一般5张卡就可以解决大部分问题，成本仅为不到5元。 准备工作 1. zip (View Contents) 17-Feb-2024 19:53: 697. Add amiibo. This is a complete set of amiibo bin files as of May 2023. Mar 28, 2024 · Amiibo data are stored on the physical Amiibo as a . Just wondering if there's anyone who has a valid link for the amiibo key files. NFC file - the file needed to write to an NFC tag/card or send via nfc to your switch, this emulates a physical Amiibo. Also, the likely need to set up their controller profile to a Switch Pro controller in their settings to their specific controller instead of keeping it as the default value of 'any'. I use the business card sized blanks and point the top of my seven at the middle of the card. bin files still gives me a consistent “failed to generate data to write” when doing step four and scanning my NTAG215 cards. - Implement user importing of Amiibo key bin files · Issue #2 · rilinium/Amiibank I was confused at first about the two key files needed, the locked-key and unfixed-key, but a quick Google search got me those. Now, extract fetch-amiibos. All these files can be easily found online. Press X, select the file then press A Place blank NTAG215 tag on 3ds wait until Unfortunately, all Amiibo are encrypted by the proprietary key and distributing this key is illegal. Place unfixed-info. You simply need the amiibo key (Google for it, you'll find it on pastebin ), split it in half, and TagMo 2, then load up the 2 keys, then the BIN files. They also need a key_retail. Easiest way to check is with a valid BotW amiibo bin, my personal favorite is Urbosa, but any of those will pop if the file is valid. Do not remove your tag until the write is finished. Put the amiibo encryption key file to sd root with the name amiibo_keys. bin? Oct 28, 2024 · An option to scan an amiibo file from your PC (file name extension . The library’s organization is great, which is a small thing but often overlooked by app devs, and it means you don’t have to spend ages finding the right file for each individual amiibo! Jun 22, 2021 · If you have more questions about amiibo bin files, consult our Complete Guide to amiibo bin files. Make your own amiibo cards Duplicate your amiibos or chose from our 740+ amiibos library. txt files and convert them to amiibo bin files. bin files on your Android device. if you’re on mobile you can load it into ally by opening the file in “files” and clicking the share button and share to ally, or import from the app by holding + until the import button appears. . If you’re interested, click the TestFlight link above. They are not provided. bin, load an encrypted bin file, and you're on your way! There are still many, many things to discover about how the AI functions due to how little focus AI modding has gotten in smash ultimate, but even from what's already there you should have enough to have a great time regardless!~ Dec 26, 2024 · This should open up your default browser and download the file named amiibo-files. Launch TagMo app, touch the 3 dots in the upper right corner > Load key(s) file… and select the unfixed-info. Dec 30, 2024 · Make a copy of unfixed-info. bin and locked-secret. exe) and go to File->Decrypt Amiibo, and select the new bin file (somthing_new. nfc-file. easy and lightning fast via bluetooth and NTAG215. txt-file, and outputs it as a . You do need the key_retail. This allows you use one tag as different amiibo by overwriting existing data. exe) and go to File > Decrypt Amiibo, and select the new bin file (somthing_new. life/games Nov 4, 2021 · Amiibo bin files are like an RFID chip that scans the same as an amiibo- you can put it into an amiibo figure, into an amiibo card or into a Powersaves for amiibo, and it’ll function as an original amiibo in each of those formats because it’s just an “NTAG215” chip with your amiibo’s data on it. 6+) supports using Datel "Power Tag" tokens as rewritable NFC tokens. For anything else, you just have the . You can use amiibo . zip. To download a file on the device, click on the file name. bin in order to make your own amiibos or to back up amiibo data, and I've even found links to the files, but I haven't been able to find how to dump my own from my own hardware. Place that file somewhere where you will remember. com Nov 4, 2021 · Amiibo bin files are like an RFID chip that scans the same as an amiibo- you can put it into an amiibo figure, into an amiibo card or into a Powersaves for amiibo, and it’ll function as an original amiibo in each of those formats because it’s just an “NTAG215” chip with your amiibo’s data on it. This will let you write bin files to ntag215 as valid amiibo nfc guide You should be able to find the amiibo keys with a bit of googling since the amiibot app doesn't provide them inside the app for legal reasons Oct 19, 2017 · Files for Amiibo. We strongly recommend only using bin files you own or scan an existing amiibo you own. bin file ensures that the transfer is secure and accurate. bin and Amiibo dump files on your Android device. Tagmo’s menu options are confusing at first. bin: 12-Mar-2021 13:15: Feb 15, 2024 · This is a collection of dumps of the binary contents of the NFC tags contained in the product line of amiibo figures, cards, plush toys, and wrist bands. Lastly, don't forget to pull out the amiibo ability for TOTK or BOTW before scanning an amiibo. 3, amiibo key files are no longer be included in AmiiBot for legal reasons. If you're trying to read one that can be used to save data to, you need to have the key_retail. bin not required since it’s baked in the app You only need to bring your own Amiibo data. bin" into this folder with ssbu_amiibo. such as N2 Elite, PowerTag, Flask, Slide, AmiiboLink Dec 26, 2024 · Copy the 3dsx/smdh files into 3ds folder. Stay up-to-date. The bin dump file does not get removed, but it will get moved inside the modern amiibo format, along with the decrypted Jun 17, 2023 · Tested and used in YUZU. If you want to duplicate amiibo, you need to import amiibo key files by yourself. bin to be in your keys folder in-order to be able to load them in the first place. Use "Write Tag (Auto)" and place the phone over a blank NTAG215 tag to write the data and create a Amiibo out of it. Amiibox is a powerful amiibo modding suite that allows you to: read and write amiibo bins as encrypted files; dynamically read from an editable regions. key, open retail. select Actions at the top leftish of the emulated window, then click Scan an Amiibo. After you finish uploading the files, they will appear under "File Explorer" on the device. I have managed to install amiitool on ubuntu 20. To delete a file or multiple files, select one or more of them and click on the "Delete" button. There is technically an option to get around this titled “Ignore Tag ID #” at the bottom of the menu, but this option has no practical purpose. Dec 26, 2024 · Put a valid amiibo dump into /amiibo_dump. Download AmiiBoss from the app store. Open the Amiibo editor(ui. Mar 12, 2021 · Files for Amiibo Collection. To the best of my knowledge, yuzu has excellent amiibo support. heria. bin files but in settings says no unfixed key and no locked key, I can load amiibo tag, but write tag button is greyed out. (Backups cannot be shared for legal reasons) Writing an NFC tag is effectively permanent. Reply Angelosdragon1 • Aug 14, 2020 · 「KEY FILE MISSING」と表示されるので「key_retail. bin and Amiibo . exe and create a desktop shortcut. - If you do not see Decrypt Amiibo in the File dropdown, you either have no placed the key_retail. Activate amiibo scanning in game, hit F2, browse to the amiibo directory, profit. In this video, I will use QR codes to provide a step-by-step guide in creating Nintendo amiibos with the IOS amiiboss app. 04LTS. Select a file to emulate it. You need also to specify a file using -k [keys] switch, indicating which file contains the cryptographic master keys. just look into one of the amiibo dump files the key file for placiibo is there thats how i got it to work. I am going mad Lets try again: Reinstall TagMo-6529c7a on the Xiaomi Poco F3 Dec 29, 2023 · That . bin). They’re hosted by Google Drive, on an unknown individual’s account, and they were sent to us by readers. nfc file you want- click Emulate- and tap it to your Switch's joystick to use! Jun 6, 2017 · Place unfixed-info. Supports all devices. 一台全功能NFC的安卓手机 ------------本人使用的是魅族16s 2. bin file in your keys folder. g. Nov 5, 2021 · If you’re an amiibo collector, one thing’s for sure: amiibo are expensive, and downloading amiibo bin files is a great way to circumvent the hefty price tags of Nintendo’s highly-valuable line of figurines. txt in multitude of different ways; edit the behavior of smash ultimate amiibo figures, something which typical apps are unable I downloaded placiibo to my iPhone and like 3 different key_retail bin files, but every time I try to select one as my encryption key it says that it's not a valid file. Step 3) Add Your key. The bin files there can be used like any other bin files. but the TLDR is; in the game go the menu Amiibo, (for some games you need to unlock a character or an area to enter the menu Amiibo), choose scan amiibo, then depending on the game you get a prompt that shows you, that you need to keep press/hold the correct button (on the dpat or joystick) to active amiibo. bin files for Yuzu Amiibos are and use as you normally would in game. Depending on the character you want, its corresponding amiibo could cost a hundred dollars or more! The only time you need an extra file for when using amiibos is is you want to save to them. I’m not sure what I’m doing wrong. Now, you should have a bin for your Amiibo which means it is now compatible with Amiibo editors like this one. PyAmiibo is capable of parsing most NTAG properties, as well as some Amiibo data. If input or output are unspecified, amiitool will default to stdin Dec 16, 2024 · Amiitool can encrypt decrypted BIN files. Not sure if you need the key_retail. Press X, select the file, press A, place blan NTAG215 tag on 3ds wait until finished. bin file in your keys file that allows yuzu to get through the encryption. bin you can open Command Prompt and use this command to encrypt the BINs from that site. No other amiibo file was used for reference. bin file basically would remove access to get through the amiibo encryption, so the errors you mention make some sense. BIN file is now a simil of a New Ntag215, ready to be programmed, you can assign that . /nfc-amiibo path-to-key-file path-to-amiibo-file. If you've somehow removed it from your phone, re-download the Files app Jun 24, 2020 · Since version 1. Tagmo loads . bin”, “unfixed-info. bin for Wolf Link, as I don't know if leveling it up is saved in the game's files or on the amiibo itself. keys" and "key_retail. bin is present, the bin dump's encrypted sections can be also used, which means that amiibo settings (mii, name, etc. Nov 17, 2024 · To scan an Amiibo: While playing a game that supports Amiibo, either navigate to the area where Amiibo scanning is expected, or press/hold the correct button to enable the Amiibo scan prompt (this site has a basic list of supported games and what benefits are provided by each: https://amiibo. Also, I can't select both of the files at the same time, should I be able to do that? I haven't changed the files' names. Otherwise, you will… Hey guys. Unfortunately, all Amiibo are encrypted by the proprietary key, and distributing this key is illegal. bin files unless you just want them as some sort of backup. bin or . 2K: MCAS Powersaves Dec 26, 2024 · I simply made a test backup, and then copied the name of that file (AMIIBO_4b9309fa_2017-06-17_[Test]) and replaced the key parts, like the beginning to Shovel_Knight and the brackets to be [Shovel Knight] and it worked fine. put the amiibo encryption key file to sd root with the name "amiibo_keys. I load the Tag and when I hit Write NFC and put the nfc card under it I get the Source UID does not match the target. You will need to rely on search engines and communities. The Complete Guide to Amiibo Bin Files; How do I use amiibo bin files? All Amiibo Bin Files Directory; Information for Etsy sellers. We are not able to provide information on the encryption key or amiibo bin files. it took me a few minutes to figure it out but it worked perfectly afterwards. Launch the app from Homebrew Launcher. Downloaded tagmo, downloaded tagmo configuration files on to phone, downloaded and extracted amiibo . “Load Tag” – if you already have an amiibo file on your phone, you use this option to find that file with the built-in file explorer. bin" Launch the app from homebrew launcher. py -m nfc2bin -i [Amiibo]. key and then check if its 160 bytes, if so then place in the same folder as the . 0 folder!). bin. This should open up your default browser and download the file named amiibo-files. The link is here. vxotqpjodtjtjrrxmltjmmdepbwptkybcdvfpgzkkqslj