The FS for the system-version title(TID 0100000000000809) contains "/file" (and, with [5.0.0+], "/digest"):

Offset Size Description
0x0 0x1 Major
0x1 0x1 Minor
0x2 0x1 Micro
0x3 0x1 Padding
0x4 0x1 Revision Major
0x5 0x1 Revision Minor
0x6 0x2 Padding
0x8 0x20 Platform string ("NX" with zeros afterwards)
0x28 0x40 Version hash (Hex ASCII string). 0x28-bytes(not including NUL-terminator) normally with zeros afterwards.
0x68 0x18 Display version (System-version in string form with zeros afterwards, e.g. "2.1.0"). This is what is displayed in System settings.
0x80 0x80 Display title (System version in longform, e.g. "NintendoSDK Firmware for NX 2.0.0-15"). This is what is displayed in DevMenu.

Known Versions

Retail Firmware Updates

Firmware Version String Hex ASCII String "/digest" contents
1.0.0 NintendoSDK Firmware for NX 1.0.0-15 84b8da475a02261c456e6472b403b31416480165 N/A
2.0.0 NintendoSDK Firmware for NX 2.0.0-15 25233e518f580062b41f45fae7ce56bff261094a N/A
2.1.0 NintendoSDK Firmware for NX 2.1.0-0 e548f82b0aaff5fd18cfd80e7b9bd9808eeb7c99 N/A
2.2.0 NintendoSDK Firmware for NX 2.2.0-1 c83b637205048e61e73c870f21271cc3c6364396 N/A
2.3.0 NintendoSDK Firmware for NX 2.3.0-0 3ed3bbc8885b6362f4f244dcecd2b430fa27310e N/A
3.0.0 NintendoSDK Firmware for NX 3.0.0-10.0 7fbde2b0bba4d14107bf836e4643043d9f6c8e47 N/A
3.0.1 NintendoSDK Firmware for NX 3.0.1-0.0 a3363e086791370ed89dca69c697b4a8bc443d66 N/A
3.0.2 NintendoSDK Firmware for NX 3.0.2-0.0 56bc7f71d0e13179ccb6543bbb33d7f537859e49 N/A
4.0.0 NintendoSDK Firmware for NX 4.0.0-4.0 875be0f6edc29b23938b7aea50764421b9f217e5 N/A
4.0.1 NintendoSDK Firmware for NX 4.0.1-0.0 826588c45cecab1672c46f5de87d83ea6008d583 N/A
4.1.0 NintendoSDK Firmware for NX 4.1.0-0.0 314f9468b704e84e1ffed449dfa6108ba4be221d N/A
5.0.0 NintendoSDK Firmware for NX 5.0.0-3.0 66790aa646927601523df36a6750205cd944b3de gW93A#00050000#QRnTiv2kqQV-KO9DAn1Wzz4S2-SDH4Zd10y8Jx5KalI=
5.0.1 NintendoSDK Firmware for NX 5.0.1-0.0 4b51b56242cc388ef487e148048e2c80e25994ad gW93A#00050001#wBt05i54vmIPr7cs44Vvod3M9s5M2Yl2ZVd_pd036MY=
5.1.0 NintendoSDK Firmware for NX 5.1.0-3.0 23f9df53e25709d756e0c76effcb2473bd3447dd gW93A#00050100#29uVhARHOdeTZmfdPnP785egrfRbPUW5n3IAACuHoPw=
6.0.0 NintendoSDK Firmware for NX 6.0.0-5.0 ef435c4fcf83831d535424f6fc28e6c91f7669d1 gW93A#00060000#9k9lgdev3glK0ltQTdWmdK7jU1BL9oWNJRAFkQpHUYI=
6.0.1 NintendoSDK Firmware for NX 6.0.1-1.0 880a0ba230a9b9225a87abe1de6c8ab8d832551e gW93A#00060001#a4EXpeev_mWNw7Dk0vkOsCMIxlosx2JuXPiOa5hEMd0=
6.1.0 NintendoSDK Firmware for NX 6.1.0-4.0 3e478da6353b192c36490f4aa34df0d10d575146 gW93A#00060100#FziXCoELZt0C7o-t_rro9xWTcKkgPrsksov-OVrL00c=
6.2.0 NintendoSDK Firmware for NX 6.2.0-1.0 921f86701e69af7ac02712e24abf18a666c2b5fb CusHY#00060200#-uAUBEUSc-Se5mvfhJsj3Krr9ayN7IyTX60_XcLsZkQ=
7.0.0 NintendoSDK Firmware for NX 7.0.0-5.0 e4b38b15e880d251c182323894077508803abaaf CusHY#00070000#5PRVTLegTfFlaOw3kznosYec9d8BxGj8pN3wqGa80so=

Other

Firmware Version String Hex ASCII String Note
2.0.0-2 NintendoSDK Firmware for NX 2.0.0-2 665fafc03935d12eebba8060a135516b021ccbaa Revision of factory firmware.
2.0.0-13 NintendoSDK Firmware for NX 2.0.0-13 60b5fa391b0055f50fec362d29ac18395f387412 Revision of factory firmware.
3.0.0 NintendoSDK Firmware for NX 3.0.0-10.0 83480e96a810a6c7cd3a8fb58dfb5b53961ac781 Revision of factory firmware.
6.0.0-4.0 NintendoSDK Firmware for NX 6.0.0-4.0 5dc1909aea612d7a444884faca584fa8ae895b5c Pre-release version of firmware 6.0.0.

Development Firmwares

Firmware Version String Hex ASCII String Note
0.8.5-0 NintendoSDK Firmware for NX 0.8.5-0 3dd94e3e75a61a7a828756919dba98c42ed7069a Pre-release firmware.