diff --git a/config.xml b/config.xml
index 33e6375ec..8f99bd079 100644
--- a/config.xml
+++ b/config.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<widget id="com.moodle.moodlemobile" version="3.5.1" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
+<widget id="com.moodle.moodlemobile" version="3.5.2" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
     <name>Moodle</name>
     <description>Moodle official app</description>
     <author email="mobile@moodle.com" href="http://moodle.com">Moodle Mobile team</author>
@@ -122,7 +122,7 @@
     </plugin>
     <plugin name="ionic-plugin-keyboard" spec="^2.2.1" />
     <plugin name="cordova-plugin-zip" spec="^3.1.0" />
-    <plugin name="cordova-plugin-local-notifications-mm" spec="^1.0.11" />
+    <plugin name="cordova-plugin-local-notifications-mm" spec="^1.0.13" />
     <plugin name="cordova-plugin-file-opener2" spec="^2.0.19" />
     <plugin name="com-darryncampbell-cordova-plugin-intent" spec="^1.1.0" />
     <plugin name="cordova-sqlite-evcore-extbuild-free" spec="^0.9.7" />
diff --git a/src/addon/mod/quiz/pages/player/player.scss b/src/addon/mod/quiz/pages/player/player.scss
index 0ee54c698..5766ea400 100644
--- a/src/addon/mod/quiz/pages/player/player.scss
+++ b/src/addon/mod/quiz/pages/player/player.scss
@@ -7,4 +7,8 @@ ion-app.app-root page-addon-mod-quiz-player {
     .core-has-fixed-timer form {
         padding-top: 56px;
     }
+
+    .toolbar-ios .bar-buttons-ios .bar-button {
+        @include padding-horizontal($content-padding);
+    }
 }
\ No newline at end of file
diff --git a/src/addon/mod/quiz/providers/quiz-sync.ts b/src/addon/mod/quiz/providers/quiz-sync.ts
index 67aca51a6..7e25e3891 100644
--- a/src/addon/mod/quiz/providers/quiz-sync.ts
+++ b/src/addon/mod/quiz/providers/quiz-sync.ts
@@ -285,7 +285,8 @@ export class AddonModQuizSyncProvider extends CoreSyncBaseProvider {
                     // Attempt not found or it's finished in online. Discard it.
                     warnings.push(this.translate.instant('addon.mod_quiz.warningattemptfinished'));
 
-                    return this.finishSync(siteId, quiz, courseId, warnings, lastAttemptId, offlineAttempt, onlineAttempt, true);
+                    return this.finishSync(siteId, quiz, courseId, warnings, offlineAttempt.id, offlineAttempt, onlineAttempt,
+                            true);
                 }
 
                 // Get the data stored in offline.
diff --git a/src/addon/qtype/multichoice/providers/handler.ts b/src/addon/qtype/multichoice/providers/handler.ts
index 8eded4917..b543e3d97 100644
--- a/src/addon/qtype/multichoice/providers/handler.ts
+++ b/src/addon/qtype/multichoice/providers/handler.ts
@@ -151,4 +151,22 @@ export class AddonQtypeMultichoiceHandler implements CoreQuestionHandler {
     isSameResponseSingle(prevAnswers: any, newAnswers: any): boolean {
         return this.utils.sameAtKeyMissingIsBlank(prevAnswers, newAnswers, 'answer');
     }
+
+    /**
+     * Prepare and add to answers the data to send to server based in the input. Return promise if async.
+     *
+     * @param {any} question Question.
+     * @param {any} answers The answers retrieved from the form. Prepared answers must be stored in this object.
+     * @param {boolean} [offline] Whether the data should be saved in offline.
+     * @param {string} [siteId] Site ID. If not defined, current site.
+     * @return {void|Promise<any>} Return a promise resolved when done if async, void if sync.
+     */
+    prepareAnswers(question: any, answers: any, offline: boolean, siteId?: string): void | Promise<any> {
+        if (question && !question.multi && typeof answers[question.optionsName] != 'undefined' && !answers[question.optionsName]) {
+            /* It's a single choice and the user hasn't answered. Delete the answer and its sequencecheck because
+               sending an empty string (default value) will mark the first option as selected. */
+            delete answers[question.optionsName];
+            delete answers[question.optionsName.replace('answer', ':sequencecheck')];
+        }
+    }
 }
diff --git a/src/app/app.scss b/src/app/app.scss
index 3a4cf162f..04a8bb6cd 100644
--- a/src/app/app.scss
+++ b/src/app/app.scss
@@ -930,7 +930,7 @@ ion-app.app-root {
   }
 
   // Fix modals displayed over action sheet.
-  .disable-scroll ion-modal .ion-page {
+  &.disable-scroll ion-modal .ion-page {
     pointer-events: initial;
   }
 }
diff --git a/src/components/local-file/core-local-file.html b/src/components/local-file/core-local-file.html
index cad6c9347..fe68564d6 100644
--- a/src/components/local-file/core-local-file.html
+++ b/src/components/local-file/core-local-file.html
@@ -17,7 +17,7 @@
             </button>
 
             <button *ngIf="editMode" ion-button icon-only clear [attr.aria-label]="'core.save' | translate" color="success" type="submit">
-                <ion-icon name="checkmark"></ion-icon>
+                <ion-icon name="checkmark" ios="md-checkmark"></ion-icon>
             </button>
 
             <button ion-button clear icon-only (click)="deleteFile($event)" [attr.aria-label]="'core.delete' | translate" color="danger">
diff --git a/src/components/split-view/core-split-view.html b/src/components/split-view/core-split-view.html
index b71eba4f8..1d2d88bcd 100644
--- a/src/components/split-view/core-split-view.html
+++ b/src/components/split-view/core-split-view.html
@@ -1,5 +1,5 @@
 <ion-split-pane (ionChange)="onSplitPaneChanged($event._visible);" [when]="when">
-    <ion-menu [content]="detailNav" type="push" class="core-avoid-header">
+    <ion-menu [content]="detailNav" type="push" class="core-avoid-header" [side]="side" #menu>
         <ng-content></ng-content>
     </ion-menu>
     <ion-nav [root]="detailPage" #detailNav main class="core-avoid-header"></ion-nav>
diff --git a/src/components/split-view/split-view.ts b/src/components/split-view/split-view.ts
index 8808fa88e..ac9e434f5 100644
--- a/src/components/split-view/split-view.ts
+++ b/src/components/split-view/split-view.ts
@@ -15,7 +15,8 @@
 // Code based on https://github.com/martinpritchardelevate/ionic-split-pane-demo
 
 import { Component, ViewChild, Input, ElementRef, OnInit, Optional, OnDestroy } from '@angular/core';
-import { NavController, Nav, ViewController } from 'ionic-angular';
+import { NavController, Nav, ViewController, Platform, Menu } from 'ionic-angular';
+import { TranslateService } from '@ngx-translate/core';
 import { CoreFileUploaderProvider } from '@core/fileuploader/providers/fileuploader';
 import { Subscription } from 'rxjs';
 
@@ -45,7 +46,9 @@ import { Subscription } from 'rxjs';
 export class CoreSplitViewComponent implements OnInit, OnDestroy {
 
     @ViewChild('detailNav') detailNav: Nav;
+    @ViewChild('menu') menu: Menu;
     @Input() when?: string | boolean = 'md';
+
     protected isEnabled = false;
     protected masterPageName = '';
     protected masterPageIndex = 0;
@@ -56,16 +59,27 @@ export class CoreSplitViewComponent implements OnInit, OnDestroy {
     protected originalMasterCanLeave: Function;
     protected ignoreSplitChanged = false;
     protected audioCaptureSubscription: Subscription;
+    protected languageChangedSubscription: Subscription;
 
     // Empty placeholder for the 'detail' page.
     detailPage: any = null;
+    side: string;
 
-    constructor(@Optional() private masterNav: NavController, element: ElementRef, fileUploaderProvider: CoreFileUploaderProvider) {
+    constructor(@Optional() private masterNav: NavController, element: ElementRef, fileUploaderProvider: CoreFileUploaderProvider,
+            platform: Platform, translate: TranslateService) {
         this.element = element.nativeElement;
 
         this.audioCaptureSubscription = fileUploaderProvider.onAudioCapture.subscribe((starting) => {
             this.ignoreSplitChanged = starting;
         });
+
+        // Change the side when the language changes.
+        this.languageChangedSubscription = translate.onLangChange.subscribe((event: any) => {
+            setTimeout(() => {
+                this.side = platform.isRTL ? 'right' : 'left';
+                this.menu.setElementAttribute('side', this.side);
+            });
+        });
     }
 
     /**
@@ -244,5 +258,6 @@ export class CoreSplitViewComponent implements OnInit, OnDestroy {
     ngOnDestroy(): void {
         this.detailsDidEnterSubscription && this.detailsDidEnterSubscription.unsubscribe();
         this.audioCaptureSubscription.unsubscribe();
+        this.languageChangedSubscription.unsubscribe();
     }
 }
diff --git a/src/config.json b/src/config.json
index 80abf6de7..27634fc6f 100644
--- a/src/config.json
+++ b/src/config.json
@@ -2,8 +2,8 @@
     "app_id" : "com.moodle.moodlemobile",
     "appname": "Moodle Mobile",
     "desktopappname": "Moodle Desktop",
-    "versioncode" : 3510,
-    "versionname" : "3.5.1",
+    "versioncode" : 3520,
+    "versionname" : "3.5.2",
     "cache_expiration_time" : 300000,
     "default_lang" : "en",
     "languages": {"ar": "عربي", "bg": "Български", "ca": "Català", "cs": "Čeština", "da": "Dansk", "de": "Deutsch", "de-du": "Deutsch - Du", "el": "Ελληνικά", "en": "English", "es": "Español", "es-mx": "Español - México", "eu": "Euskara", "fa": "فارسی", "fi": "Suomi", "fr" : "Français", "he" : "עברית", "hu": "magyar", "it": "Italiano", "ja": "日本語", "ko" : "한국어", "lt" : "Lietuvių", "mr": "मराठी", "nl": "Nederlands", "pl": "Polski", "pt-br": "Português - Brasil", "pt": "Português - Portugal", "ro": "Română", "ru": "Русский", "sr-cr": "Српски", "sr-lt": "Srpski", "sv": "Svenska", "tr" : "Türkçe", "uk" : "Українська", "zh-cn" : "简体中文", "zh-tw" : "正體中文"},
diff --git a/src/core/question/providers/helper.ts b/src/core/question/providers/helper.ts
index f1c9b5b3c..0bce778ca 100644
--- a/src/core/question/providers/helper.ts
+++ b/src/core/question/providers/helper.ts
@@ -465,10 +465,19 @@ export class CoreQuestionHelperProvider {
                     if (selected) {
                         selected.setAttribute('selected', 'selected');
                     }
-                } else if (element.type == 'radio' || element.type == 'checkbox') {
-                    // Check if this radio or checkbox is selected.
+                } else if (element.type == 'radio') {
+                    // Check if this radio is selected.
                     if (element.value == question.localAnswers[name]) {
                         element.setAttribute('checked', 'checked');
+                    } else {
+                        element.removeAttribute('checked');
+                    }
+                } else if (element.type == 'checkbox') {
+                    // Check if this checkbox is checked.
+                    if (this.utils.isTrueOrOne(question.localAnswers[name])) {
+                        element.setAttribute('checked', 'checked');
+                    } else {
+                        element.removeAttribute('checked');
                     }
                 } else {
                     // Put the answer in the value.
diff --git a/src/providers/local-notifications.ts b/src/providers/local-notifications.ts
index 29ea131a2..25e51da9e 100644
--- a/src/providers/local-notifications.ts
+++ b/src/providers/local-notifications.ts
@@ -497,6 +497,8 @@ export class CoreLocalNotificationsProvider {
 
     /**
      * Show an in app notification popover.
+     * This function was used because local notifications weren't displayed when the app was in foreground in iOS10+,
+     * but the issue was fixed in the plugin and this function is no longer used.
      *
      * @param {CoreILocalNotification} notification Notification.
      */
@@ -594,11 +596,6 @@ export class CoreLocalNotificationsProvider {
      * @return {Promise<any>} Promise resolved when stored, rejected otherwise.
      */
     trigger(notification: CoreILocalNotification): Promise<any> {
-        if (this.platform.is('ios') && this.platform.version().num >= 10) {
-            // In iOS10 show in app notification.
-            this.showNotificationPopover(notification);
-        }
-
         const entry = {
             id: notification.id,
             at: parseInt(notification.at, 10)