diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 4a1c4e09..ddc9c642 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -117,7 +117,8 @@ tasks.register("setAssetTs", Task::class) {
 }
 
 dependencies {
-	implementation("androidx.appcompat:appcompat:1.7.0")
+    implementation("androidx.core:core-splashscreen:1.0.1")
+    implementation("androidx.appcompat:appcompat:1.7.0")
     implementation("androidx.legacy:legacy-support-v4:1.0.0")
     implementation("com.google.android.material:material:1.12.0")
     implementation("androidx.cardview:cardview:1.0.0")
diff --git a/app/src/main/java/org/andbootmgr/app/DroidBootFlow.kt b/app/src/main/java/org/andbootmgr/app/DroidBootFlow.kt
index 40a95298..7a96e77c 100644
--- a/app/src/main/java/org/andbootmgr/app/DroidBootFlow.kt
+++ b/app/src/main/java/org/andbootmgr/app/DroidBootFlow.kt
@@ -334,18 +334,22 @@ private fun Flash(vm: WizardActivityState) {
 		entry.exportToFile(File(vm.logic.abmEntries, "real.conf"))
 		if (!vm.deviceInfo.isBooted(vm.logic)) {
 			terminal.add(vm.activity.getString(R.string.term_flashing_droidboot))
+			val backupLk = File(vm.logic.fileDir, "backup_lk1.img")
 			val f = SuFile.open(vm.deviceInfo.blBlock)
 			if (!f.canWrite())
 				terminal.add(vm.activity.getString(R.string.term_cant_write_bl))
-			vm.copyPriv(
-				SuFileInputStream.open(vm.deviceInfo.blBlock),
-				File(vm.logic.fileDir, "backup_lk1.img")
-			)
+			vm.copyPriv(SuFileInputStream.open(vm.deviceInfo.blBlock), backupLk)
 			try {
 				vm.copyPriv(vm.flashStream(flashType), File(vm.deviceInfo.blBlock))
 			} catch (e: IOException) {
 				terminal.add(vm.activity.getString(R.string.term_bl_failed))
-				terminal.add(if (e.message != null) e.message!! else "(null)")
+				terminal.add(e.message ?: "(null)")
+				terminal.add(vm.activity.getString(R.string.term_consult_doc))
+				return@Terminal
+			} catch (e: HashMismatchException) {
+				terminal.add(e.message ?: "(null)")
+				terminal.add(vm.activity.getString(R.string.restoring_backup))
+				vm.copyPriv(SuFileInputStream.open(backupLk), File(vm.deviceInfo.blBlock))
 				terminal.add(vm.activity.getString(R.string.term_consult_doc))
 				return@Terminal
 			}
diff --git a/app/src/main/java/org/andbootmgr/app/FixDroidBootFlow.kt b/app/src/main/java/org/andbootmgr/app/FixDroidBootFlow.kt
index c28cdfdf..e4a49897 100644
--- a/app/src/main/java/org/andbootmgr/app/FixDroidBootFlow.kt
+++ b/app/src/main/java/org/andbootmgr/app/FixDroidBootFlow.kt
@@ -66,15 +66,22 @@ private fun Flash(vm: WizardActivityState) {
 			tmpFile
 		} else null
 		terminal.add(vm.activity.getString(R.string.term_flashing_droidboot))
+		val backupLk = File(vm.logic.fileDir, "backup_lk.img")
 		val f = SuFile.open(vm.deviceInfo.blBlock)
 		if (!f.canWrite())
 			terminal.add(vm.activity.getString(R.string.term_cant_write_bl))
-		vm.copyPriv(SuFileInputStream.open(vm.deviceInfo.blBlock), File(vm.logic.fileDir, "backup_lk.img"))
+		vm.copyPriv(SuFileInputStream.open(vm.deviceInfo.blBlock), backupLk)
 		try {
 			vm.copyPriv(vm.flashStream("DroidBootFlashType"), File(vm.deviceInfo.blBlock))
 		} catch (e: IOException) {
 			terminal.add(vm.activity.getString(R.string.term_bl_failed))
-			terminal.add(if (e.message != null) e.message!! else "(null)")
+			terminal.add(e.message ?: "(null)")
+			terminal.add(vm.activity.getString(R.string.term_consult_doc))
+			return@Terminal
+		} catch (e: HashMismatchException) {
+			terminal.add(e.message ?: "(null)")
+			terminal.add(vm.activity.getString(R.string.restoring_backup))
+			vm.copyPriv(SuFileInputStream.open(backupLk), File(vm.deviceInfo.blBlock))
 			terminal.add(vm.activity.getString(R.string.term_consult_doc))
 			return@Terminal
 		}
diff --git a/app/src/main/java/org/andbootmgr/app/MainActivity.kt b/app/src/main/java/org/andbootmgr/app/MainActivity.kt
index 579e8a76..b6c9873d 100644
--- a/app/src/main/java/org/andbootmgr/app/MainActivity.kt
+++ b/app/src/main/java/org/andbootmgr/app/MainActivity.kt
@@ -29,6 +29,7 @@ import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
@@ -92,7 +93,6 @@ class MainActivityState {
 	val theme = ThemeViewModel(this)
 	var defaultCfg = mutableStateMapOf<String, String>()
 	var isReady = false
-	var name by mutableStateOf("") /* default value moved to onCreate() */
 	var navController: NavHostController? = null
 	var drawerState: DrawerState? = null
 	var scope: CoroutineScope? = null
@@ -154,27 +154,10 @@ class MainActivity : ComponentActivity() {
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
 		val vm = MainActivityState()
-		vm.name = getString(R.string.android)
+		installSplashScreen().setKeepOnScreenCondition { !vm.isReady }
 		vm.activity = this
 		vm.logic = DeviceLogic(this)
 
-		val content: View = findViewById(android.R.id.content)
-		content.viewTreeObserver.addOnPreDrawListener(
-			object : ViewTreeObserver.OnPreDrawListener {
-				override fun onPreDraw(): Boolean {
-					// Check if the initial data is ready.
-					return if (vm.isReady) {
-						// The content is ready; start drawing.
-						content.viewTreeObserver.removeOnPreDrawListener(this)
-						true
-					} else {
-						// The content is not ready; suspend.
-						false
-					}
-				}
-			}
-		)
-
 		val toast =
 			Toast.makeText(this, getString(R.string.toolkit_extracting), Toast.LENGTH_LONG)
 		CoroutineScope(Dispatchers.IO).launch {
diff --git a/app/src/main/java/org/andbootmgr/app/UpdateDroidBootFlow.kt b/app/src/main/java/org/andbootmgr/app/UpdateDroidBootFlow.kt
index 2a4628b6..72f776df 100644
--- a/app/src/main/java/org/andbootmgr/app/UpdateDroidBootFlow.kt
+++ b/app/src/main/java/org/andbootmgr/app/UpdateDroidBootFlow.kt
@@ -64,15 +64,22 @@ private fun Flash(vm: WizardActivityState) {
 			tmpFile
 		} else null
 		terminal.add(vm.activity.getString(R.string.term_flashing_droidboot))
+		val backupLk = File(vm.logic.fileDir, "backup2_lk.img")
 		val f = SuFile.open(vm.deviceInfo.blBlock)
 		if (!f.canWrite())
 			terminal.add(vm.activity.getString(R.string.term_cant_write_bl))
-		vm.copyPriv(SuFileInputStream.open(vm.deviceInfo.blBlock), File(vm.logic.fileDir, "backup2_lk.img"))
+		vm.copyPriv(SuFileInputStream.open(vm.deviceInfo.blBlock), backupLk)
 		try {
 			vm.copyPriv(vm.flashStream("DroidBootFlashType"), File(vm.deviceInfo.blBlock))
 		} catch (e: IOException) {
 			terminal.add(vm.activity.getString(R.string.term_bl_failed))
-			terminal.add(if (e.message != null) e.message!! else "(null)")
+			terminal.add(e.message ?: "(null)")
+			terminal.add(vm.activity.getString(R.string.term_consult_doc))
+			return@Terminal
+		} catch (e: HashMismatchException) {
+			terminal.add(e.message ?: "(null)")
+			terminal.add(vm.activity.getString(R.string.restoring_backup))
+			vm.copyPriv(SuFileInputStream.open(backupLk), File(vm.deviceInfo.blBlock))
 			terminal.add(vm.activity.getString(R.string.term_consult_doc))
 			return@Terminal
 		}
diff --git a/app/src/main/java/org/andbootmgr/app/WizardActivity.kt b/app/src/main/java/org/andbootmgr/app/WizardActivity.kt
index 8acc53d6..475b248f 100644
--- a/app/src/main/java/org/andbootmgr/app/WizardActivity.kt
+++ b/app/src/main/java/org/andbootmgr/app/WizardActivity.kt
@@ -226,7 +226,6 @@ class WizardActivityState(val codename: String) {
 		navController.navigate(current.value)
 	}
 
-	// TODO have callers handle HashMismatchException when appropriate
 	fun copy(inputStream: InputStream, outputStream: OutputStream): Long {
 		var nread = 0L
 		val buf = ByteArray(8192)
diff --git a/app/src/main/java/org/andbootmgr/app/util/StayAliveService.kt b/app/src/main/java/org/andbootmgr/app/util/StayAliveService.kt
index e300dc95..465bd3ee 100644
--- a/app/src/main/java/org/andbootmgr/app/util/StayAliveService.kt
+++ b/app/src/main/java/org/andbootmgr/app/util/StayAliveService.kt
@@ -7,6 +7,8 @@ import android.content.Intent
 import android.content.ServiceConnection
 import android.os.Binder
 import android.os.IBinder
+import android.os.PowerManager
+import android.os.PowerManager.WakeLock
 import android.util.Log
 import androidx.core.app.NotificationChannelCompat
 import androidx.core.app.NotificationCompat
@@ -23,6 +25,7 @@ interface IStayAlive {
 }
 
 class StayAliveService : LifecycleService(), IStayAlive {
+	private lateinit var wakeLock: WakeLock
 	private var work: (suspend (Context) -> Unit)? = null
 	var isWorkDone = false
 		get() {
@@ -44,6 +47,7 @@ class StayAliveService : LifecycleService(), IStayAlive {
 		}
 	private var destroyed = false
 	private var onDone: (() -> Unit)? = null
+	@SuppressLint("WakelockTimeout")
 	override fun startWork(work: suspend (Context) -> Unit, extra: Any) {
 		if (destroyed) {
 			throw IllegalStateException("This StayAliveService was leaked. It is already destroyed.")
@@ -56,9 +60,14 @@ class StayAliveService : LifecycleService(), IStayAlive {
 		this.work = work
 		this.extra = extra
 		lifecycleScope.launch {
-			this@StayAliveService.work!!.invoke(this@StayAliveService)
-			isWorkDone = true
-			onDone!!.invoke()
+			wakeLock.acquire()
+			try {
+				this@StayAliveService.work!!.invoke(this@StayAliveService)
+				isWorkDone = true
+				onDone!!.invoke()
+			} finally {
+				wakeLock.release()
+			}
 		}
 	}
 	fun finish() {
@@ -89,6 +98,8 @@ class StayAliveService : LifecycleService(), IStayAlive {
 			.setOnlyAlertOnce(true)
 			.setLocalOnly(true)
 			.build())
+		wakeLock = getSystemService(PowerManager::class.java)
+			.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "ABM::StayAlive(user_task)")
 		lifecycleScope.launch {
 			delay(10000)
 			// If there was nothing started after 10 seconds, there's a bug.
diff --git a/app/src/main/java/org/andbootmgr/app/util/Terminal.kt b/app/src/main/java/org/andbootmgr/app/util/Terminal.kt
index 7839340d..74152049 100644
--- a/app/src/main/java/org/andbootmgr/app/util/Terminal.kt
+++ b/app/src/main/java/org/andbootmgr/app/util/Terminal.kt
@@ -16,6 +16,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.unit.dp
+import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
@@ -24,7 +25,8 @@ import org.andbootmgr.app.R
 import java.io.File
 import java.io.FileOutputStream
 
-private class BudgetCallbackList(private val log: FileOutputStream?) : MutableList<String> {
+private class BudgetCallbackList(private val scope: CoroutineScope,
+                                 private val log: FileOutputStream?) : MutableList<String> {
 	val internalList = ArrayList<String>()
 	var cb: ((String) -> Unit)? = null
 	override val size: Int
@@ -119,7 +121,9 @@ private class BudgetCallbackList(private val log: FileOutputStream?) : MutableLi
 	}
 
 	fun onAdd(element: String) {
-		log?.write((element + "\n").encodeToByteArray())
+		scope.launch {
+			log?.write((element + "\n").encodeToByteArray())
+		}
 		cb?.invoke(element)
 	}
 }
@@ -139,7 +143,7 @@ fun Terminal(logFile: String? = null, action: (suspend (MutableList<String>) ->
 		StayAliveConnection(ctx) { service ->
 			if (action != null) {
 				val log = logFile?.let { FileOutputStream(File(ctx.externalCacheDir, it)) }
-				val s = BudgetCallbackList(log)
+				val s = BudgetCallbackList(CoroutineScope(Dispatchers.IO), log)
 				s.cb = { element ->
 					scope.launch {
 						text.value += element + "\n"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bbe90d5b..34cdccd9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -259,4 +259,5 @@
 	<string name="service_notifications">Service notifications</string>
 	<string name="abm_processing_title">ABM is processing</string>
 	<string name="abm_processing_text">Please make sure you do not leave the app to avoid issues</string>
+	<string name="restoring_backup">Restoring backup…</string>
 </resources>