11.3.0-36

The Old3DS+New3DS 11.3.0-36 system update was released on February 6, 2017. This Old3DS update was released for the following regions: USA, EUR, JPN, CHN, KOR, and TWN. This New3DS update was released for the following regions: USA, EUR, JPN, CHN, KOR, and TWN.

Security flaws fixed: <fill this in manually later, see the updatedetails page from the ninupdates-report page(s) once available for now>.

Change-log

Official USA change-log:

Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience

System Titles

NATIVE_FIRM

Process9

Actual code changed in Process9 .text. Exactly 2 functions were updated, and 1 new function was added which is called by the first function(see below).

Process9 now sets a global flag via the new function when starting certain titles. The flag is set when programID-high matches 0x00040000 or 0x00040010, unless the uniqueID is 0xF802A for programID-high 0x00040000. The flag is set for programID-high 0x00040030(applets) when the uniqueID doesn't match any of the 6 Home Menu regions. The flag is not set if the programID-high isn't one of these 3. This is implemented in the PXIPM cmdhandler function in the code for PXIPM:RegisterProgram, in the code prior to actually calling the PXIPM:RegisterProgram function.

The flag-write function just writes hard-coded value 0x1 to the u8 flag.

The firmlaunch function panics when attempting to launch SAFE_FIRM(New3DS programID-low bitmask is masked out) if that flag has been set, to prevent safefirmhax.

The anti-downgrade title-listing in Process9 was also updated.

New3DS arm9loader

New3DS arm9loader wasn't updated.

ARM11 kernel

Numerous functions were updated, fixing fasthax.

Additional bound checks were added to timer-handling code (setting and/or incrementing a timer's value, etc.) and to the KTimerAndWDTManager second virtual function, so that a timer's value can never be set to either a negative value or the past (which is what fasthax needed to do).
The two functions that either add a KTimeableInterruptEvent instance to the global queue of pending KTimeableInterruptEvent (see KTimerAndWDTManager), or remove one from it, now return a boolean indicating whether the interrupt event already is/was in the queue (if that is true, the function that adds the interrupt event will now update the timer registers in that case as well). This is especially used for the below fixes.
When adding a timer to that queue, its reference count is incremented (if it wasn't already in the queue). It is only decremented when needed, after actually signaling the timer by the interrupt-handling code.
A virtual method was added to the definition of abstract class KTimeableInterruptEvent, which returns static_cast<KAutoObject *>(this)->referenceCount != 1 for KTimer instances and true for KThread instances. Prior to (re)adding timer interrupt events (as well as some other objects) to the queue, objects with a refcount of 1 are removed from it.

A new SVC was implemented: 0x59. See here for the kernel implementation. This is used by the updated GSP-module.

Modules

No FIRM ARM11 sysmodule was changed.

NS

Only two constants were actually changed: the minimal value required for the kernel's minor version number (now 0x35, ie. 11.3 NFIRM, it used to be 0x23, ie. 5.0 NFIRM), and the version number used for FS:InitializeWithSdkVersion.

New_3DS GSP

At least the 3 following functions were updated (11.3 N3DS addresses):

sub_102048: now writes 0 to LCD register 0x10202014 and ORs 0x1020200C with 0x10001
sub_10B4F4
sub_10B7DC

Friends

Exact same change as usual: only the byte for fpdver in exefs codebin was updated(changed from 8 to 9).

Home Menu

Exactly 1 function was updated, this fixed bossbannerhax(the last exploit used by menuhax). Code was added to verify that the common and {region/language}-specific exbanner sections don't have a decompressed size >{max_size}, when that happens it jumps over the func-call for doing the actual decompression.

eShop system-application

In RomFS, the message/ localization files and "/cad/Download.arc.lz" were updated. Besides strings related to new localization messages, it appears the only new string in the exefs codebin is "integrated_account". Going by nearby strings this may be used with network requests.

 diff --git a/v21506/US_English_tiger.msbt.lz.decom_wstrs b/v23552/US_English_tiger.msbt.lz.decom_wstrs
 index 3c3938f..2890b25 100644
 --- a/v21506/US_English_tiger.msbt.lz.decom_wstrs
 +++ b/v23552/US_English_tiger.msbt.lz.decom_wstrs
 @@ -766,6 +766,11 @@ Continue
  Press 
   to return to
  the HOME Menu.
 +A receipt will be sent to the e-mail
 +address registered to your Nintendo
 +Account. If a child account is being
 +used, the receipt will be sent to the
 +parent or guardian's e-mail address.
  Do you want to continue shopping?
  Please read the information
  on the upper screen.
 @@ -783,6 +788,9 @@ more information.
  You can view the code at any time
  by checking the receipt within Account
  Activity in the Settings / Other menu.
 +The code will also be sent to the
 +e-mail address registered to your
 +Nintendo Account.
  Transaction complete.
  Generated Code(s)
  A software update is available.