(Redirected from Essential.exefs)
This is the approved revision of this page, as well as being the most recent.
This is the approved revision of this page, as well as being the most recent.
This is a list of important system files or other data.
| Filename | Name in essential.exefs | Path in GodMode9 | Purpose | Importance |
|---|---|---|---|---|
LocalFriendCodeSeed_B
|
frndseed
|
1:/rw/sys/LocalFriendCodeSeed_B
|
Used to identify the console for online play. | Bans from online play are effectively bans on the LFCS. (Don't ask here or NH for help on how to get unbanned.) |
HWCAL0.dat and HWCAL1.dat
|
hwcal0 and hwcal1
|
1:/ro/sys/HWCAL0.dat and 1:/ro/sys/HWCAL1.dat
|
Contains hardware calibration data. Parts of this are put into the Config savegame during first-time setup. | If this file is lost or taken from a different console, then when the console is formatted, the calibration data will be inaccurate and can result in problems such as flickering screens. |
movable.sed
|
movable
|
1:/private/movable.sed
|
Contains data that is used to encrypt digital games and saves on the SD card. Also used for CMACs on various NAND files. | Keeping a backup of this is important if you want to ensure you can still recover your old saves if your console is lost or broken! |
| NAND CID | nand_cid
|
M:/nand_cid.mem
|
Used as part of the NAND encryption. | This can be used to decrypt a NAND backup on a PC, however it's not strictly required for 99.9% of cases. |
| NAND header | nand_hdr
|
S:/nand_hdr.bin
|
Contains information on the NAND partitions. The console-unique part here include the TWL MBR, which is encrypted per-console. | Corrupting this will prevent the console from starting. However GodMode9 can generate a new one in its place if you can use it through something like ntrboot. |
| OTP | otp
|
M:/otp.mem and M:/otp_dec.mem
|
Contains various kinds of console-unique data. Used to generate encryption keys and identifies a console in some cases like the eShop. See also: 3dbrew:OTP Registers | This is required to decrypt a NAND backup on a PC. Sharing this means someone could impersonate your console to Nintendo, so don't post it in a public space! |
SecureInfo_A or SecureInfo_B
|
secinfo
|
1:/rw/sys/SecureInfo_A or 1:/rw/sys/SecureInfo_B
|
Used to identify the console in some cases like the eShop. | Sharing this means someone could impersonate your console to Nintendo, so don't post it in a public space! |
Notes
GodMode9 does not automatically update the essential backup; to manually update it, choose a NAND image (either SysNAND, EmuNAND, or a backup on the SD card), then choose "NAND image options..." -> "Update embedded backup".
hwcal0 and hwcal1 were not included in essential.exefs before GodMode9 v1.3.0 (August 7, 2017).