AzaharPlus - RetroBIOS

Type	standalone
Classification	Community forks
Source	https://github.com/AzaharPlus/AzaharPlus
Version	2126.0-A
Profiled	2026-08-08
Cores	azaharplus
Systems	nintendo-3ds

Technical notes

Fork of Azahar. Data dir: azaharplus-emu (AzaharPlus on Windows and macOS), with citra-emu and lime3ds-emu probed as legacy locations. ref: src/common/common_paths.h:27-49

InitKeys reads three key sources in order: boot9.bin, keys.txt, aes_keys.txt. ref: src/core/hw/aes/key.cpp:617-633

keys.txt has an AES-encrypted key blob compiled into the binary, used when the file is absent. ENABLE_BUILTIN_KEYBLOB defaults to ON. ref: src/core/hw/aes/key.cpp:485-613, CMakeLists.txt:153

1861 title seeds are compiled in and loaded before seeddb.bin is read. ref: src/core/file_sys/seed_db.cpp:52-54, src/core/file_sys/seed_db.cpp:220

System archives (shared font, Mii data, country list, bad word list) have open-source replacements embedded in the binary, and ClCertA falls back to an embedded certificate and key pair. ref: src/core/file_sys/archive_ncch.cpp:174-203, src/core/hle/service/http/http_c.cpp:2107-2133

otp.bin, movable.sed, SecureInfo_A and LocalFriendCodeSeed_B are replaced by embedded dummy data when enable_required_online_lle_modules is set. That setting defaults to false, and every loader returns a not-found status without it. ref: src/common/settings.h:492-493

System titles are downloaded and installed in-app from the Nintendo CDN, so the NAND title tree is not user-supplied. ref: src/core/nus_download.cpp:13, src/core/hle/service/am/am.cpp:1220-1243

sector0x96.bin is defined but read by no code path. ref: src/common/common_paths.h:88

mcu.dat, mac.txt, digests.txt, cecIds.txt and http_hle_replace_rules.txt live in sysdata but hold per-installation state the emulator writes itself.

9 files | 0 required, 9 optional | 9 in repo, 0 missing | 3 with HLE fallback

keys.txt optional in repo HLE fallback

• Path: sysdata/keys.txt
• System: nintendo-3ds
• Source: src/core/hw/aes/key.cpp:227-366, src/core/hw/aes/key.cpp:475-615
• Platforms: emudeck
• AES key slots, common keys and NFC secrets; embedded encrypted blob used if missing

aes_keys.txt optional in repo

• Path: sysdata/aes_keys.txt
• System: nintendo-3ds
• Source: src/core/hw/aes/key.cpp:368-471, src/common/common_paths.h:86
• Platforms: bizhawk, emudeck, retrodeck
• legacy keyfile format, parsed without section markers

boot9.bin optional in repo

• Path: sysdata/boot9.bin
• System: nintendo-3ds
• Size: 64.0 KB
• Validation: size
• Source: src/core/hw/aes/key.cpp:156-225, src/common/common_paths.h:87
• bootrom key section read at offset 55760, filling 80 key slots

shared_font.bin optional in repo HLE fallback

• Path: sysdata/shared_font.bin
• System: nintendo-3ds
• Source: src/core/hle/service/apt/apt.cpp:278-294, src/core/hle/service/apt/apt.cpp:305
• legacy path, tried after the shared font system archive

seeddb.bin optional in repo HLE fallback

• Path: sysdata/seeddb.bin
• System: nintendo-3ds
• Source: src/core/file_sys/seed_db.cpp:52-103
• Platforms: bizhawk
• game seed database for 9.6+ titles; written out from the embedded seeds if absent

otp.bin optional in repo

• Path: sysdata/otp.bin
• System: nintendo-3ds
• Size: 256 B
• Validation: size, crypto
• Source: src/core/file_sys/otp.cpp:35-80, src/core/hw/unique_data.cpp:224-275
• console-unique OTP, AES-CBC decrypted then checked against the OTP magic

movable.sed optional in repo

• Path: nand/private/movable.sed
• System: nintendo-3ds
• Size: 288 B / 320 B
• Validation: size, signature
• Source: src/core/hw/unique_data.cpp:277-319, src/core/hw/unique_data.h:105-135
• console-unique key seed; 288 bytes without the AES MAC block, 320 with it

SecureInfo_A optional in repo

• Path: nand/rw/sys/SecureInfo_A
• System: nintendo-3ds
• Size: 273 B
• Validation: size, signature
• Source: src/core/hw/unique_data.cpp:123-181, src/core/hw/unique_data.h:59
• console serial and region; a failed signature is retried against every region

LocalFriendCodeSeed_B optional in repo

• Path: nand/rw/sys/LocalFriendCodeSeed_B
• System: nintendo-3ds
• Size: 272 B
• Validation: size, signature
• Source: src/core/hw/unique_data.cpp:183-222, src/core/hw/unique_data.h:78
• friend code generation seed

Generated on 2026-08-23T16:12:06Z