Calibration

During factory setup, the Switch goes through calibration and the generated data from this process is written to two NAND user partitions (PRODINFO and PRODINFOF).

PRODINFOF is a FAT12 compliant filesystem and it's structure can be found here. It's mainly used to keep calibration logs and other assorted files.

PRODINFO is a raw binary blob containing the main calibration data, which ranges from hardware IDs to system keys.

CAL0

This is the raw data stored under the PRODINFO partition. Each block of data is padded to 16 bytes, being the last 2 bytes a CRC16 over said block.

Bellow is a list of offsets and sizes for each block of raw calibration data.

Offset	Size	Field	Description
0x0000	0x04	magic	"CAL0" header magic.
0x0004	0x04	unk0	Always 0x07.
0x0008	0x04	calib_data_size	Total size of calibration data minus the 0x20 bytes header.
0x000C	0x02	version	Always 0x01.
0x000E	0x02	revision	Increases each time calibration data is installed.
0x0020	0x20	calib_data_sha256	SHA256 hash calculated over calibration data.
0x0040	0x1D	config_id1	Configuration ID string.
0x0060	0x20	unk1	Empty.
0x0080	0x04	wlan_country_codes_num
0x0084	0x17C	wlan_country_codes
0x0210	0x06	wlan_mac_addr
0x0220	0x06	bd_addr
0x0230	0x06	accelerometer_offset
0x0238	0x06	accelerometer_scale
0x0240	0x06	gyroscope_offset
0x0248	0x06	gyroscope_scale
0x0250	0x18	serial_number
0x0270	0x30	device_key_ecc_p256	Device key ECC-P256 variation (empty and unused).
0x02B0	0x180	device_cert_ecc_p256	Device certificate ECC-P256 variation (empty and unused).
0x0440	0x30	device_key_ecc_b233	Device key ECC-B233 variation (empty and unused).
0x0480	0x180	device_cert_ecc_b233	Device certificate ECC-B233 variation (active).
0x0610	0x30	eticket_key_ecc_p256	ETicket key ECC P256-variation (empty and unused).
0x0650	0x180	eticket_cert_ecc_p256	ETicket certificate ECC-P256 variation (empty and unused).
0x07E0	0x30	eticket_key_ecc_b233	ETicket key ECC-B233 variation (empty and unused).
0x0820	0x180	eticket_cert_ecc_b233	ETicket certificate ECC-B233 variation (empty and unused).
0x09B0	0x110	ssl_key	SSL key (empty and unused).
0x0AD0	0x04	ssl_cert_size	Total size of the SSL certificate.
0x0AE0	0x800	ssl_cert	SSL certificate. Only ssl_cert_size bytes are used.
0x12E0	0x20	ssl_cert_sha256	SHA256 over the SSL certificate.
0x1300	0x1000	random_number	Random generated data.
0x2300	0x20	random_number_sha256	SHA256 over the random data block.
0x2320	0x110	gamecard_key	Gamecard key (empty and unused).
0x2440	0x400	gamecard_cert	Gamecard certificate.
0x2840	0x20	gamecard_cert_sha256	SHA256 over the gamecard certificate.
0x2860	0x220	eticket_key_rsa	ETicket key RSA-2048 variation (empty and unused).
0x2A90	0x240	eticket_cert_rsa	ETicket certificate RSA-2048 variation (active).
0x2CE0	0x18	battery_lot	Battery lot string ID.
0x2D00	0x800	speaker_calib_value	Speaker calibration values. Only 0x5A bytes are used.
0x3510	0x04	region_code
0x3520	0x50	amiibo_key	Amiibo key.
0x3580	0x14	amiibo_cert_ecqv	Amiibo certificate ECQV variation.
0x35A0	0x70	amiibo_cert_ecdsa	Amiibo certificate ECDSA variation.
0x3620	0x40	amiibo_key_ecqv_bls	Amiibo ECQV-BLS key.
0x3670	0x20	amiibo_cert_ecqv_bls	Amiibo certificate ECQV-BLS variation.
0x36A0	0x90	amiibo_root_cert_ecqv_bls	Amiibo root certificate ECQV-BLS variation.
0x3740	0x04	product_model
0x3750	0x06	color_variation
0x3760	0x0C	lcd_backlight_brightness_mapping
0x3770	0x50	device_ext_key_ecc_b233	Extended device key ECC-B233 variation (active).
0x37D0	0x30	eticket_ext_key_ecc_p256	Extended ETicket key ECC-P256 variation (empty and unused).
0x3830	0x50	eticket_ext_key_ecc_b233	Extended ETicket key ECC-B233 variation (empty and unused).
0x3890	0x240	eticket_ext_key_rsa	Extended ETicket key RSA-2048 variation (active).
0x3AE0	0x130	ssl_ext_key	Extended SSL key (active).
0x3C20	0x130	gamecard_ext_key	Extended Gamecard key (active).
0x3D60	0x04	lcd_vendor_id