# bootloader/sys/ – Missing files and where they come from

The repo only builds and packages **nyx.bin**, **libsys_lp0.bso**, and **libsys_minerva.bso**. The rest of `bootloader/sys/` is not built here. Below is where each missing piece comes from.

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## res.pak

- **What:** Nyx GUI resource pack (fonts, glyphs, assets). Loaded at `NYX_RES_ADDR`; without it Nyx will show “res.pak not found or corrupted”.
- **Where:** Built with **nyx-res-tool** (extract/build res.pak from a directory of resources).
  - **Repo:** https://github.com/friedkeenan/nyx-res-tool  
  - **Usage:** `extract.py` to unpack an existing res.pak; `build.py` to pack a directory into res.pak.
- **Alternative:** Use a res.pak from an official hekate release (e.g. CTCaer) and place it in `bootloader/sys/`.

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## thk.bin

- **What:** Atmosphère **Tsec Hovi Keygen** firmware. Used for TSEC/crypto when booting HOS (e.g. package1 decryption). If missing, boot can fail with TSEC/keygen errors.
- **Where:** From **Atmosphère** (Atmosphere-NX/Atmosphere). It is built as part of their sept/tsec keygen and shipped in their release package; the binary that hekate expects as `bootloader/sys/thk.bin` is that keygen blob.
  - **Repo:** https://github.com/Atmosphere-NX/Atmosphere  
  - **In practice:** Copy `thk.bin` from an official Atmosphère release (e.g. `atmosphere/` or their “hekate” bundle) into `bootloader/sys/`.

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## emummc.kipm

- **What:** emuMMC **KIP1 module** (patch data). Injected into the **FS** KIP1 at boot when emuMMC is used (`_kipm_inject("bootloader/sys/emummc.kipm", "FS", ki)` in `pkg2.c`). Contains caps + .text that get merged into the FS kip.
- **Where:** Built from the **m4xw/emuMMC** project (not this repo).
  - **Repo:** https://github.com/m4xw/emuMMC  
  - **Build (hekate):** Run `./build.sh` in the emuMMC repo; it produces a `.kipm` file. Copy that file to `bootloader/sys/` as `emummc.kipm`.
  - **Requirements:** devkitARM / devkitA64 and the toolchain expected by the emuMMC Makefile (see their README).
  - **Alternative:** Copy **emummc.kipm** from an official hekate release (e.g. CTCaer/hekate) into `bootloader/sys/`. Use a kipm that matches your hekate/HOS version.

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## bootloader/sys/l4t/

- **What:** Firmware blobs for **L4T** (Linux/Android on Switch): BL31, BL33, SC7 entry/exit, BPMP, etc. Used when booting L4T or when warmboot needs `sc7exit_b01.bin`.
- **Files expected (from `l4t.c` and `pkg1.c`):**
  - `bl31.bin`
  - `bl33.bin`
  - `sc7entry.bin`
  - `sc7exit.bin`
  - `bpmpfw.bin`
  - `bpmpfw_b01.bin`
  - `mtc_tbl_b01.bin`
  - `sc7exit_b01.bin` (referenced in `pkg1.c` for warmboot)
- **Where:** From **L4T / Switchroot** (or similar) L4T/SD release packages that provide “bootloader/sys/l4t/” (or equivalent) with these binaries. Not built in hekate-pro.
  - **In practice:** Copy the **l4t/** folder (with the files above) from an official hekate L4T-capable release or from a Switchroot/L4T image that matches the expected layout.

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## Summary

| File or folder       | Origin |
|----------------------|--------|
| **res.pak**          | Build with [nyx-res-tool](https://github.com/friedkeenan/nyx-res-tool), or copy from official hekate release. |
| **thk.bin**          | Atmosphère (sept/tsec keygen); copy from official Atmosphère release. |
| **emummc.kipm**      | Build from [m4xw/emuMMC](https://github.com/m4xw/emuMMC) (`./build.sh`), or copy from official hekate release. |
| **bootloader/sys/l4t/** | L4T/Switchroot firmware; copy from hekate L4T bundle or L4T image. |

After copying these into `bootloader/sys/` (and `bootloader/sys/l4t/`), your SD layout matches what the reference `hekate_pro_6.5.1_Nyx_1.9.1`-style folder expects.