diff --git a/firefox-ios/Client/Experiments/initial_experiments.json b/firefox-ios/Client/Experiments/initial_experiments.json
index 86094044fc8b5..ed9366499026b 100644
--- a/firefox-ios/Client/Experiments/initial_experiments.json
+++ b/firefox-ios/Client/Experiments/initial_experiments.json
@@ -2,20 +2,20 @@
   "data": [
     {
       "schemaVersion": "1.12.0",
-      "slug": "brand-refresh-onboarding-ios",
-      "id": "brand-refresh-onboarding-ios",
+      "slug": "ios-japan-onboarding-with-video-release",
+      "id": "ios-japan-onboarding-with-video-release",
       "arguments": {},
-      "application": "org.mozilla.ios.Firefox",
+      "application": "org.mozilla.ios.FirefoxBeta",
       "appName": "firefox_ios",
-      "appId": "org.mozilla.ios.Firefox",
-      "channel": "release",
-      "userFacingName": "Brand Refresh - Onboarding iOS",
-      "userFacingDescription": "New onboarding",
+      "appId": "org.mozilla.ios.FirefoxBeta",
+      "channel": "beta",
+      "userFacingName": "iOS - Japan Onboarding with Video - Beta",
+      "userFacingDescription": "Japan Onboarding with Video",
       "isEnrollmentPaused": false,
       "isRollout": false,
       "bucketConfig": {
         "randomizationUnit": "nimbus_id",
-        "namespace": "ios-onboarding-framework-feature-release-22",
+        "namespace": "ios-onboarding-framework-feature-beta-5",
         "start": 0,
         "count": 10000,
         "total": 10000
@@ -40,14 +40,15 @@
               "enabled": true,
               "value": {
                 "enable-modern-ui": true,
-                "should-use-brand-refresh-configuration": false
+                "should-use-japan-configuration": true,
+                "enable-video-intro": false
               }
             }
           ]
         },
         {
           "slug": "treatment-a",
-          "ratio": 9,
+          "ratio": 1,
           "feature": {
             "featureId": "this-is-included-for-mobile-pre-96-support",
             "enabled": false,
@@ -59,23 +60,24 @@
               "enabled": true,
               "value": {
                 "enable-modern-ui": true,
-                "should-use-brand-refresh-configuration": true
+                "should-use-japan-configuration": true,
+                "enable-video-intro": true
               }
             }
           ]
         }
       ],
-      "targeting": "((is_already_enrolled) || ((isFirstRun == 'true') && (app_version|versionCompare('148.!') >= 0) && ((language in ['ja']) != true)))",
-      "startDate": "2026-02-13",
+      "targeting": "(app_version|versionCompare('149.3.0') >= 0) && (language in ['ja'])",
+      "startDate": "2026-04-02",
       "enrollmentEndDate": null,
       "endDate": null,
       "proposedDuration": 28,
-      "proposedEnrollment": 21,
+      "proposedEnrollment": 7,
       "referenceBranch": "control",
       "featureValidationOptOut": false,
       "localizations": null,
       "locales": null,
-      "publishedDate": "2026-02-13T17:05:52.530789Z",
+      "publishedDate": "2026-04-02T17:39:29.543803Z",
       "isFirefoxLabsOptIn": false,
       "firefoxLabsTitle": "",
       "firefoxLabsDescription": "",