This page has been marked as a Legacy Method because it has been superseded by faster, safer methods. You should only follow it if you are unable to follow [Installing boot9strap (USM)](installing-boot9strap-(usm)).
We will now use our Homebrew Launcher access to run the Frogtool utility in order to inject the exploitable Japanese version of the "Flipnote Studio" title, which we then use to run b9sTool and install boot9strap.
This is a currently working implementation of the "FIRM partitions known-plaintext" exploit detailed [here](https://www.3dbrew.org/wiki/3DS_System_Flaws).
To use the [magnet](https://wikipedia.org/wiki/Magnet_URI_scheme) links on this page, you will need a torrent client like [Deluge](http://dev.deluge-torrent.org/wiki/Download).
* <i class="fa fa-magnet" aria-hidden="true" title="This is a magnet link. Use a torrent client to download the file."></i> - [frogcert.bin](magnet:?xt=urn:btih:d12278ea50bb3574f1fbd327f3d0e2292c70941f&dn=frogcert.bin&tr=https%3a%2f%2ftracker.fastdownload.xyz%3a443%2fannounce&tr=https%3a%2f%2fopentracker.xyz%3a443%2fannounce&tr=http%3a%2f%2fopen.trackerlist.xyz%3a80%2fannounce&tr=http%3a%2f%2ft.nyaatracker.com%3a80%2fannounce&tr=udp%3a%2f%2ftracker.tiny-vps.com%3a6969%2fannounce&tr=udp%3a%2f%2fopen.demonii.si%3a1337%2fannounce&tr=udp%3a%2f%2ftracker.port443.xyz%3a6969%2fannounce&tr=udp%3a%2f%2ftracker.vanitycore.co%3a6969%2fannounce&tr=udp%3a%2f%2ftracker.torrent.eu.org%3a451%2fannounce&tr=udp%3a%2f%2fretracker.lanta-net.ru%3a2710%2fannounce&tr=udp%3a%2f%2fthetracker.org%3a80%2fannounce&tr=http%3a%2f%2ftorrent.nwps.ws%3a80%2fannounce&tr=udp%3a%2f%2ftracker.coppersurfer.tk%3a6969%2fannounce&tr=udp%3a%2f%2ftracker.iamhansen.xyz%3a2000%2fannounce&tr=udp%3a%2f%2fbt.xxx-tracker.com%3a2710%2fannounce&tr=http%3a%2f%2f0d.kebhana.mx%3a443%2fannounce&tr=udp%3a%2f%2fexodus.desync.com%3a6969%2fannounce&tr=udp%3a%2f%2ftracker.opentrackr.org%3a1337%2fannounce&tr=udp%3a%2f%2ftracker4.itzmx.com%3a2710%2fannounce&tr=udp%3a%2f%2ftracker.justseed.it%3a1337%2fannounce&tr=http%3a%2f%2ftherightsize.net%3a1337%2fannounce&tr=udp%3a%2f%2fretracker.hotplug.ru%3a2710%2fannounce&tr=udp%3a%2f%2ftracker.internetwarriors.net%3a1337%2fannounce&tr=udp%3a%2f%2f9.rarbg.com%3a2800%2fannounce&tr=https%3a%2f%2f2.track.ga%3a443%2fannounce&tr=udp%3a%2f%2fbigfoot1942.sektori.org%3a6969%2fannounce)
* The latest release of [Frogtool](https://github.com/zoogie/Frogtool/releases/latest)
1. Boot your device while holding (Select) to launch the Luma configuration menu
+ If you encounter issues launching the Luma configuration menu, [follow this troubleshooting guide](https://github.com/zoogie/b9sTool/blob/master/TROUBLESHOOTING.md)
1. Use the (A) button and the D-Pad to turn on the following:
+ **"Show NAND or user string in System Settings"**
+ Your device should load the Home Menu after a short delay. If you get a black screen lasting longer than 5 minutes, [follow this troubleshooting guide](troubleshooting#black-screen-on-sysnand-boot-after-installing-boot9strap)