I just managed to install a cia manager in my n3ds without CN/gateway thanks to @
Steveice10
You need :
- A 9.0-9.2 console obviously
- Browserhax :
https://gbatemp.net/threads/yellows8s-browserhax-thread.398132/
- Cakes for ninjhax2 :
https://gbatemp.net/threads/release-cakesfw.391200/page-62#post-5695644
- Cakes 9.9 (first post) with an encrypted 9.0-9.2 firmware.bin : can't link it here, but search "firmware9.2.bin" on google on download the Cakes.zip folder. The md5 of the firmware9.2.bin should be 87aea2e8c30a533fd9f319683b3a0793. Rename it firmware.bin and put it in the cakes folder along with the cetk file.
- The latest ninjhax version of FBI :
https://gbatemp.net/threads/release-fbi-open-source-cia-installer.386433/
- A cia version of the cia installer you want to install (for exemple FBI or BigBlueMenu)
Once you have all of that :
1. Start the HBL
2. Choose Cakes
3. In select Patches, choose "Disable signature checks" but don't choose emunand.
4. Boot the cfw.
5. Run the browserhax again, but now choose FBI.
6. Install the cia manager. If you get a database error, read the FBI faq in the official thread.
Then you will have a cia installer installed on the sysnand. You will still need CN or OOT to create an emunand though.
Edit : It works with a CN cia + the gw launcher.