22.0.0: Difference between revisions

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The Switch 22.0.0 system update was released on March 17, 2026 (UTC). This Switch update was released for the following regions: ALL.

Security flaws fixed: ~~<fill~~ this ~~in manually>~~.

Security flaws fixed: yes.

As of roughly March 31 - April 2, 2026 (UTC), this sysupdate is now required by dauth.

==Change-log==

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A new NSO compression method was introduced.

This ~~appears to be~~ a ~~slightly~~ customized variant of zstd and is used when NSO [[NSO0#Flags|flags]] have bit 7 set.

This is a customized variant of zstd and is used when NSO [[NSO0#Flags|flags]] have bit 7 set.

* ZSTD_MAGICNUMBER is set to 0x4349425A (b'ZBIC') instead of standard 0xFD2FB528

* ZSTD_LEGACY_SUPPORT is set to 0

* ~~otherwise~~ the ~~code seems to match~~ zstd ~~version ~~~1.6.0

* ZSTD_TRACE is set to 1, the version of zstd used is 1.5.7 (ZSTD_VERSION_NUMBER = 10507)

* FSE_readNCount is replaced with a BIC (Binary Interpolative Coding) version which improves compression of entropy tables significantly

=== [[NFC_services|nfc]] ===

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* The [[Error_Report_services|erpt]] field for EncryptedDyingMessage is now additionally only handled with an application process (same data loaded above).

* ...

=== [[Applet_Manager_services|am]] ===

Additional object destruction has been implemented. Applications and applets are now expected to always perform a clean exit, thus breaking the traditional homebrew launching method which reuses the same process.

==See Also==

@@ Line 1: / Line 1: @@
 The Switch 22.0.0 system update was released on March 17, 2026 (UTC). This Switch update was released for the following regions: ALL.
-Security flaws fixed: <fill this in manually>.
+Security flaws fixed: yes.
+As of roughly March 31 - April 2, 2026 (UTC), this sysupdate is now required by dauth.
 ==Change-log==
@@ Line 219: / Line 221: @@
 A new NSO compression method was introduced.
-This appears to be a slightly customized variant of zstd and is used when NSO [[NSO0#Flags|flags]] have bit 7 set.
+This is a customized variant of zstd and is used when NSO [[NSO0#Flags|flags]] have bit 7 set.
 * ZSTD_MAGICNUMBER is set to 0x4349425A (b'ZBIC') instead of standard 0xFD2FB528
 * ZSTD_LEGACY_SUPPORT is set to 0
-* otherwise the code seems to match zstd version ~1.6.0
+* ZSTD_TRACE is set to 1, the version of zstd used is 1.5.7 (ZSTD_VERSION_NUMBER = 10507)
+* FSE_readNCount is replaced with a BIC (Binary Interpolative Coding) version which improves compression of entropy tables significantly
 === [[NFC_services|nfc]] ===
@@ Line 232: / Line 235: @@
 * The [[Error_Report_services|erpt]] field for EncryptedDyingMessage is now additionally only handled with an application process (same data loaded above).
 * ...
+=== [[Applet_Manager_services|am]] ===
+Additional object destruction has been implemented. Applications and applets are now expected to always perform a clean exit, thus breaking the traditional homebrew launching method which reuses the same process.
 ==See Also==