[fix] Disable Amethyst on iOS 26.

We're still researching ways around Apple's JIT limitations.

Author: crystall1nedev

Natives/LauncherNewsViewController.m

@@ -47,25 +47,35 @@ - (void)viewDidLoad
 
     if(!isJailbroken && getPrefBool(@"warnings.limited_ram_warn") && (roundf(NSProcessInfo.processInfo.physicalMemory / 0x1000000) < 3900)) {
         // "This device has a limited amount of memory available."
-        [self showWarningAlert:@"limited_ram" hasPreference:YES];
+        [self showWarningAlert:@"limited_ram" hasPreference:YES exitWhenCompleted:NO];
+    }
+    
+    if (@available(iOS 26.0, *)) {
+        [self showWarningAlert:@"ios19_jitdead" hasPreference:NO exitWhenCompleted:YES];
     }
 
     self.navigationItem.leftBarButtonItem = self.splitViewController.displayModeButtonItem;
     self.navigationItem.rightBarButtonItem = [sidebarViewController drawAccountButton];
     self.navigationItem.leftItemsSupplementBackButton = true;
 }
 
--(void)showWarningAlert:(NSString *)key hasPreference:(BOOL)isPreferenced {
+-(void)showWarningAlert:(NSString *)key hasPreference:(BOOL)isPreferenced exitWhenCompleted:(BOOL)shouldExit {
     UIAlertController *warning = [UIAlertController
                                       alertControllerWithTitle:localize([NSString stringWithFormat:@"login.warn.title.%@", key], nil)
-                                      message:localize([NSString stringWithFormat:@"login.warn.title.%@", key], nil)
+                                      message:localize([NSString stringWithFormat:@"login.warn.message.%@", key], nil)
                                       preferredStyle:UIAlertControllerStyleAlert];
 
     UIAlertAction *action;
     if(isPreferenced) {
         action = [UIAlertAction actionWithTitle:localize(@"OK", nil) style:UIAlertActionStyleDestructive handler:^(UIAlertAction * action) {
             setPrefBool([NSString stringWithFormat:@"warnings.%@_warn", key], NO);
         }];
+    } else if(shouldExit) {
+        action = [UIAlertAction actionWithTitle:localize(@"OK", nil) style:UIAlertActionStyleDestructive handler:^(UIAlertAction * action) {
+            [UIApplication.sharedApplication performSelector:@selector(suspend)];
+            usleep(100*1000);
+            exit(0);
+        }];
     } else {
         action = [UIAlertAction actionWithTitle:localize(@"OK", nil) style:UIAlertActionStyleCancel handler:nil];
     }

Natives/resources/Assets.car

@@ -106,6 +106,8 @@
 "login.warn.message.legacy_ios" = "To run the next major release, this device needs to be running iOS 14 or later.";
 "login.warn.title.limited_ram" = "This device has a limited amount of memory available.";
 "login.warn.message.limited_ram" = "We recommend leaving auto RAM enabled to prevent instability and performance issues.";
+"login.warn.title.ios19_jitdead" = "Amethyst is not supported on iOS 26 or later.";
+"login.warn.message.ios19_jitdead" = "Due to changes in iOS that inhibit the ability to enable JIT, Amethyst cannot work in its current state and requires heavy research to find a new path forward.\n\nPressing OK will close the app.";
 
 "login.warn.title.demomode" = "Your account is Demo";
 "login.warn.message.demomode" = "As a replacement to offline and local mode, demo mode will allow you to sign into a Microsoft account that does not own the game and play the Java Edition trial, introduced in 1.3.1 and newer versions. Older versions contain the full game, as the official launcher does not place these restrictions. See our website to learn more about this transition from offline mode.";