diff --git a/README.md b/README.md
index 1fbd49f..177b735 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,23 @@ Everything stays inside the home directory — no root, no system directories.
 Filenames use a slug of the app name (`WhatsApp Web` → `whatsapp-web.desktop`);
 the `Name=` field keeps the name you typed.
 
+## Updates
+
+LazyRun checks the **latest release** of this repository once, a few seconds after
+start (only when running as an AppImage) and offers to install it:
+
+- if [AppImageUpdate](https://github.com/AppImageCommunity/AppImageUpdate) is in
+  `$PATH` it is used, so only the changed blocks are downloaded (zsync);
+- otherwise the AppImage is downloaded, verified (ELF + AppImage magic bytes) and
+  swapped in atomically — if anything fails the current AppImage stays untouched;
+- *Restart now* in the dialog runs the new version.
+
+*Check for Updates* in the footer runs the same flow manually.
+
+**Publishing a release** so updates reach users: tag it `vX.Y.Z`, upload
+`lazyrun-X.Y.Z-x86_64.AppImage` plus the `.zsync` file produced by `build.sh` as
+release assets, and mark it as the latest release.
+
 ## Build
 
 Requirements: Go 1.24+, cgo, and X11/OpenGL development headers (Fyne).
diff --git a/internal/ui/dialog_test.go b/internal/ui/dialog_test.go
index 9330baa..c5ee1bd 100644
--- a/internal/ui/dialog_test.go
+++ b/internal/ui/dialog_test.go
@@ -3,6 +3,7 @@ package ui
 import (
 	"os"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"testing"
 	"time"
@@ -70,3 +71,40 @@ func TestDialogsOpenWithoutPanic(t *testing.T) {
 	// jadi sisa goroutine bisa bertabrakan dengan tes berikutnya kalau dibiarkan.
 	time.Sleep(300 * time.Millisecond)
 }
+
+// TestStringsCoverUsedKeys memastikan setiap kunci T() yang dipakai ada di tabel
+// terjemahan (kalau tidak, UI menampilkan nama kunci mentah).
+func TestStringsCoverUsedKeys(t *testing.T) {
+	files, err := filepath.Glob("*.go")
+	if err != nil {
+		t.Fatal(err)
+	}
+	used := map[string]bool{}
+	for _, file := range files {
+		if strings.HasSuffix(file, "_test.go") {
+			continue
+		}
+		data, err := os.ReadFile(file)
+		if err != nil {
+			t.Fatal(err)
+		}
+		for _, m := range regexp.MustCompile(`T\("([a-z_]+)"\)`).FindAllStringSubmatch(string(data), -1) {
+			used[m[1]] = true
+		}
+	}
+	if len(used) == 0 {
+		t.Fatal("tidak ada kunci T() yang ditemukan")
+	}
+	for key := range used {
+		if _, ok := tr[key]; !ok {
+			t.Errorf("kunci %q dipakai tapi tidak ada di tabel terjemahan", key)
+		}
+	}
+
+	// dan sebaliknya: kunci terjemahan yang tidak terpakai sebaiknya dihapus
+	for key := range tr {
+		if !used[key] {
+			t.Errorf("kunci %q ada di tabel terjemahan tapi tidak dipakai", key)
+		}
+	}
+}
diff --git a/internal/ui/strings.go b/internal/ui/strings.go
index 9607661..1dc996b 100644
--- a/internal/ui/strings.go
+++ b/internal/ui/strings.go
@@ -30,8 +30,8 @@ var tr = map[string][2]string{
 	"browse":            {"Browse...", "Pilih..."},
 	"install":           {"Install", "Install"},
 	"cancel":            {"Cancel", "Batal"},
+	"back":              {"Back", "Kembali"},
 	"delete":            {"Delete", "Hapus"},
-	"folder":            {"Folder", "Folder"},
 	"working":           {"Working...", "Sedang diproses..."},
 
 	"new_exec_title": {"New Executable Shortcut", "Shortcut Executable Baru"},
@@ -63,11 +63,20 @@ var tr = map[string][2]string{
 	"need_target": {"Pick at least one location: menu or desktop.", "Pilih minimal satu lokasi: menu atau desktop."},
 	"no_browser":  {"No supported browser found. Install Chrome, Chromium, Brave, Edge, Vivaldi, or Firefox first.", "Browser yang didukung tidak ditemukan. Install Chrome, Chromium, Brave, Edge, Vivaldi, atau Firefox dulu."},
 
-	"github":            {"GitHub", "GitHub"},
-	"donate":            {"Donate", "Donasi"},
-	"check_updates":     {"Check for Updates", "Cek Update"},
-	"not_appimage":      {"This build is not an AppImage (version %s). Update from where you got it.", "Build ini bukan AppImage (versi %s). Update dari sumber kamu mendapatkannya."},
-	"no_appimageupdate": {"AppImageUpdate is not installed. Install it to update LazyRun automatically.", "AppImageUpdate tidak terpasang. Install dulu supaya LazyRun bisa update otomatis."},
+	"github":        {"GitHub", "GitHub"},
+	"donate":        {"Donate", "Donasi"},
+	"check_updates": {"Check for Updates", "Cek Update"},
+
+	"update_available":   {"LazyRun %s is available (you are on %s).", "LazyRun %s sudah tersedia (kamu pakai %s)."},
+	"update_hint":        {"The new AppImage is downloaded and swapped in; restart afterwards to use it.", "AppImage baru diunduh lalu ditukar; restart setelahnya untuk memakainya."},
+	"update_now":         {"Update now", "Update sekarang"},
+	"update_later":       {"Later", "Nanti"},
+	"update_page":        {"Release page", "Halaman rilis"},
+	"update_downloading": {"Downloading update...", "Mengunduh update..."},
+	"update_installed":   {"Update installed. Restart LazyRun to use the new version.", "Update terpasang. Restart LazyRun untuk memakai versi baru."},
+	"update_restart":     {"Restart now", "Restart sekarang"},
+	"up_to_date":         {"LazyRun %s is the latest version.", "LazyRun %s adalah versi terbaru."},
+	"dev_build":          {"This is a development build (%s), update check is skipped.", "Ini build development (%s), cek update dilewati."},
 }
 
 var lang = detectLang()
diff --git a/internal/ui/update.go b/internal/ui/update.go
index 9fbfcad..4c3eb29 100644
--- a/internal/ui/update.go
+++ b/internal/ui/update.go
@@ -59,11 +59,10 @@ func (ui *app) showUpdateDialog(rel update.Release) {
 	notes.Wrapping = fyne.TextWrapWord
 	notes.Importance = widget.LowImportance
 
-	body := container.NewVScroll(container.NewVBox(
-		heading(fmt.Sprintf(T("update_available"), rel.Version, ui.version)),
-		muted(T("update_hint")),
-		notes,
-	))
+	// catatan rilis di tengah (bukan top): VScroll di Fyne punya MinSize kecil,
+	// jadi kalau dipasang sebagai top dari Border isinya terpotong.
+	head := heading(fmt.Sprintf(T("update_available"), rel.Version, ui.version))
+	body := container.NewVScroll(container.NewVBox(muted(T("update_hint")), notes))
 
 	var d *dialog.CustomDialog
 	buttons := container.NewHBox(
@@ -86,7 +85,7 @@ func (ui *app) showUpdateDialog(rel update.Release) {
 		}))
 	}
 
-	d = dialog.NewCustomWithoutButtons(T("check_updates"), container.NewBorder(body, buttons, nil, nil), ui.win)
+	d = dialog.NewCustomWithoutButtons(T("check_updates"), container.NewBorder(head, buttons, nil, nil, body), ui.win)
 	showDialog(d, ui.win, 560, 440)
 }