diff --git a/ackpine-plugins/android-stubs/src/main/java/android/content/pm/IPackageInstaller.java b/ackpine-plugins/android-stubs/src/main/java/android/content/pm/IPackageInstaller.java
index 08f1e390f..a938d588b 100644
--- a/ackpine-plugins/android-stubs/src/main/java/android/content/pm/IPackageInstaller.java
+++ b/ackpine-plugins/android-stubs/src/main/java/android/content/pm/IPackageInstaller.java
@@ -16,6 +16,7 @@
 
 package android.content.pm;
 
+import android.content.IntentSender;
 import android.os.Binder;
 import android.os.IBinder;
 import android.os.IInterface;
@@ -24,8 +25,9 @@
  * Stub for {@code android.content.pm.IPackageInstaller}.
  */
 public interface IPackageInstaller extends IInterface {
-	void abandonSession(int sessionId);
 	IPackageInstallerSession openSession(int sessionId);
+	void uninstall(String packageName, int flags, IntentSender statusReceiver, int userId);
+	void uninstall(String packageName, String callerPackageName, int flags, IntentSender statusReceiver, int userId);
 	abstract class Stub extends Binder implements IPackageInstaller {
 		public static IPackageInstaller asInterface(IBinder binder) {
 			throw new UnsupportedOperationException();
diff --git a/ackpine-plugins/libsu/src/main/kotlin/ru/solrudev/ackpine/libsu/LibsuPlugin.kt b/ackpine-plugins/libsu/src/main/kotlin/ru/solrudev/ackpine/libsu/LibsuPlugin.kt
index 86df3d4c5..aa39bdf7f 100644
--- a/ackpine-plugins/libsu/src/main/kotlin/ru/solrudev/ackpine/libsu/LibsuPlugin.kt
+++ b/ackpine-plugins/libsu/src/main/kotlin/ru/solrudev/ackpine/libsu/LibsuPlugin.kt
@@ -73,7 +73,7 @@ public class LibsuPlugin : PrivilegedPlugin<
 	}
 
 	/**
-	 * Uninstall parameters for [LibsuPlugin]. Uninstall flags take effect only on Android 8.1+.
+	 * Uninstall parameters for [LibsuPlugin].
 	 */
 	public class UninstallParameters private constructor(snapshot: Snapshot) : PrivilegedUninstallParameters(snapshot) {
 
diff --git a/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PackageInstallerProxy.kt b/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PackageInstallerProxy.kt
index 12a6613e6..80e23699d 100644
--- a/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PackageInstallerProxy.kt
+++ b/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PackageInstallerProxy.kt
@@ -26,6 +26,7 @@ import android.content.pm.PackageInstallerHidden
 import android.os.Build
 import android.os.Handler
 import android.os.IBinder
+import android.os.RemoteException
 import android.os.UserHandleHidden
 import androidx.annotation.RequiresApi
 import androidx.annotation.RequiresPermission
@@ -58,6 +59,9 @@ public abstract class PackageInstallerProxy protected constructor(
 		val targetUser = installParameters[sessionId]?.targetUser
 			?: uninstallParameters[sessionId]?.targetUser
 			?: TargetUser.CURRENT
+		val installerPackageName = installParameters[sessionId]?.installerPackageName
+			?.ifEmpty { installerPackageName }
+			?: installerPackageName
 		val resolvedUserId = if (targetUser == TargetUser.CURRENT) {
 			UserHandleHidden.myUserId()
 		} else {
@@ -66,7 +70,7 @@ public abstract class PackageInstallerProxy protected constructor(
 		val packageInstaller = packageInstallers.computeIfAbsentCompat(resolvedUserId, packageInstallerLocks) {
 			createPackageInstaller(context, remotePackageInstaller, installerPackageName, resolvedUserId)
 		}
-		return BoundPackageInstaller(packageInstaller!!)
+		return BoundPackageInstaller(packageInstaller!!, resolvedUserId, installerPackageName)
 	}
 
 	final override fun createSession(
@@ -106,7 +110,9 @@ public abstract class PackageInstallerProxy protected constructor(
 	)
 
 	private inner class BoundPackageInstaller(
-		private val packageInstaller: PackageInstaller
+		private val packageInstaller: PackageInstaller,
+		private val userId: Int,
+		private val installerPackageName: String
 	) : PackageInstallerService {
 
 		override val uid: Int
@@ -166,21 +172,35 @@ public abstract class PackageInstallerProxy protected constructor(
 
 		override fun abandonSession(sessionId: Int): Unit = packageInstaller.abandonSession(sessionId)
 
+		@Suppress("CAST_NEVER_SUCCEEDS")
 		@RequiresPermission(anyOf = [Manifest.permission.REQUEST_DELETE_PACKAGES, Manifest.permission.DELETE_PACKAGES])
 		override fun uninstall(packageName: String, statusReceiver: IntentSender, ackpineSessionId: UUID) {
-			if (Build.VERSION.SDK_INT < 27) {
-				packageInstaller.uninstall(packageName, statusReceiver)
-				return
-			}
-			val privilegedParameters = uninstallParameters[ackpineSessionId]
-			var flags = 0
-			if (privilegedParameters != null) {
-				flags = applyFlag(flags, privilegedParameters.keepData, DELETE_KEEP_DATA)
-				flags = applyFlag(flags, privilegedParameters.allUsers, DELETE_ALL_USERS)
-				flags = applyFlag(flags, privilegedParameters.systemApp, DELETE_SYSTEM_APP)
+			val flags = uninstallParameters[ackpineSessionId]?.toFlags() ?: 0
+			when {
+				Build.VERSION.SDK_INT >= 27 -> (packageInstaller as PackageInstallerHidden).uninstall(
+					packageName,
+					flags,
+					statusReceiver
+				)
+
+				Build.VERSION.SDK_INT >= 23 -> try {
+					remotePackageInstaller.uninstall(
+						packageName,
+						installerPackageName,
+						flags,
+						statusReceiver,
+						userId
+					)
+				} catch (e: RemoteException) {
+					e.rethrow()
+				}
+
+				else -> try {
+					remotePackageInstaller.uninstall(packageName, flags, statusReceiver, userId)
+				} catch (e: RemoteException) {
+					e.rethrow()
+				}
 			}
-			@Suppress("CAST_NEVER_SUCCEEDS")
-			(packageInstaller as PackageInstallerHidden).uninstall(packageName, flags, statusReceiver)
 		}
 	}
 
@@ -245,10 +265,26 @@ public abstract class PackageInstallerProxy protected constructor(
 		params.installFlags = flags
 	}
 
+	private fun PrivilegedUninstallParameters.toFlags(): Int {
+		var flags = 0
+		flags = applyFlag(flags, keepData, DELETE_KEEP_DATA)
+		flags = applyFlag(flags, allUsers, DELETE_ALL_USERS)
+		flags = applyFlag(flags, systemApp, DELETE_SYSTEM_APP)
+		return flags
+	}
+
 	private fun applyFlag(flags: Int, isFlagPresent: Boolean, flag: Int): Int {
 		if (isFlagPresent) {
 			return flags or flag
 		}
 		return flags and flag.inv()
 	}
+
+	@Suppress("NewApi", "ThrowableNotThrown") // methods are available, but were hidden before API 30
+	private fun RemoteException.rethrow() {
+		if (Build.VERSION.SDK_INT >= 24) {
+			rethrowFromSystemServer()
+		}
+		rethrowAsRuntimeException()
+	}
 }
\ No newline at end of file
diff --git a/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedInstallParameters.kt b/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedInstallParameters.kt
index 30c27c478..70db52cb2 100644
--- a/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedInstallParameters.kt
+++ b/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedInstallParameters.kt
@@ -57,8 +57,7 @@ public abstract class PrivilegedInstallParameters protected constructor(snapshot
 	public val allUsers: Boolean = snapshot.allUsers
 
 	/**
-	 * Installer package for the app. Empty by default, so the calling app package name will be used. Works only on
-	 * Android 9+.
+	 * Installer package for the app. Empty by default, so the calling app package name will be used.
 	 */
 	public val installerPackageName: String = snapshot.installerPackageName
 
diff --git a/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedPlugin.kt b/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedPlugin.kt
index 3a96aa38a..9040ecc6f 100644
--- a/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedPlugin.kt
+++ b/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedPlugin.kt
@@ -76,25 +76,17 @@ public abstract class PrivilegedPlugin<
 	}
 
 	override fun getCapabilities(context: UninstallCapabilityContext): UninstallCapabilities {
-		val isPackageInstallerBased = context.uninstallerType == UninstallerType.PACKAGE_INSTALLER_BASED
-		val flagsStatus = if (
-			isPackageInstallerBased &&
-			context.sdkInt >= Build.VERSION_CODES.O_MR1
-		) {
+		val status = if (context.uninstallerType == UninstallerType.PACKAGE_INSTALLER_BASED) {
 			CapabilityStatus.SUPPORTED
 		} else {
 			CapabilityStatus.UNSUPPORTED
 		}
 		return createUninstallCapabilities(
 			PrivilegedUninstallCapabilities.Snapshot(
-				keepData = flagsStatus,
-				allUsers = flagsStatus,
-				systemApp = flagsStatus,
-				targetUser = if (isPackageInstallerBased) {
-					CapabilityStatus.SUPPORTED
-				} else {
-					CapabilityStatus.UNSUPPORTED
-				}
+				keepData = status,
+				allUsers = status,
+				systemApp = status,
+				targetUser = status
 			)
 		)
 	}
diff --git a/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedUninstallParameters.kt b/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedUninstallParameters.kt
index 28f115dfe..134f094e0 100644
--- a/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedUninstallParameters.kt
+++ b/ackpine-plugins/privileged/src/main/kotlin/ru/solrudev/ackpine/privileged/PrivilegedUninstallParameters.kt
@@ -22,7 +22,9 @@ import ru.solrudev.ackpine.plugability.AckpinePlugin
 /**
  * Shared uninstall parameters for privileged Ackpine plugins.
  */
-public abstract class PrivilegedUninstallParameters protected constructor(snapshot: Snapshot) : AckpinePlugin.Parameters {
+public abstract class PrivilegedUninstallParameters protected constructor(
+	snapshot: Snapshot
+) : AckpinePlugin.Parameters {
 
 	/**
 	 * Flag parameter to indicate that you don't want to delete the package's data directory.
diff --git a/ackpine-plugins/shizuku/src/main/kotlin/ru/solrudev/ackpine/shizuku/ShizukuPlugin.kt b/ackpine-plugins/shizuku/src/main/kotlin/ru/solrudev/ackpine/shizuku/ShizukuPlugin.kt
index 960daf4c1..322191102 100644
--- a/ackpine-plugins/shizuku/src/main/kotlin/ru/solrudev/ackpine/shizuku/ShizukuPlugin.kt
+++ b/ackpine-plugins/shizuku/src/main/kotlin/ru/solrudev/ackpine/shizuku/ShizukuPlugin.kt
@@ -95,7 +95,7 @@ public class ShizukuPlugin private constructor() : PrivilegedPlugin<
 	}
 
 	/**
-	 * Uninstall parameters for [ShizukuPlugin]. Uninstall flags take effect only on Android 8.1+.
+	 * Uninstall parameters for [ShizukuPlugin].
 	 */
 	public class UninstallParameters private constructor(snapshot: Snapshot) : PrivilegedUninstallParameters(snapshot) {
 
diff --git a/docs/changelog.md b/docs/changelog.md
index bae9c95e8..913b0d086 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -6,6 +6,14 @@ hide:
 Change Log
 ==========
 
+Version 0.25.1 (2026-07-20)
+---------------------------
+
+### Bug fixes and improvements
+
+- Uninstall flags for privileged (Shizuku/root) sessions now work on Android 5.0+.
+- Setting a custom installer package name for privileged (Shizuku/root) install sessions now works on Android 5.0+.
+
 Version 0.25.0 (2026-07-19)
 ---------------------------
 
diff --git a/docs/guide/libsu.md b/docs/guide/libsu.md
index a7f359bc3..47a2d73ce 100644
--- a/docs/guide/libsu.md
+++ b/docs/guide/libsu.md
@@ -200,12 +200,10 @@ Flag to indicate that this install should immediately be visible to all users.
 
 #### `installerPackageName`
 
-Installer package for the app. Empty by default, so the calling app package name will be used. Takes effect only on Android 9+.
+Installer package for the app. Empty by default, so the calling app package name will be used.
 
 ### Uninstall flags
 
-Take effect only on Android 8.1+.
-
 #### `keepData`
 
 Flag parameter to indicate that you don't want to delete the package's data directory.
diff --git a/docs/guide/shizuku.md b/docs/guide/shizuku.md
index fa4ff35e0..93630e504 100644
--- a/docs/guide/shizuku.md
+++ b/docs/guide/shizuku.md
@@ -223,12 +223,10 @@ Flag to indicate that this install should immediately be visible to all users.
 
 #### `installerPackageName`
 
-Installer package for the app. Empty by default, so the calling app package name will be used. Takes effect only on Android 9+.
+Installer package for the app. Empty by default, so the calling app package name will be used.
 
 ### Uninstall flags
 
-Take effect only on Android 8.1+.
-
 #### `keepData`
 
 Flag parameter to indicate that you don't want to delete the package's data directory.
diff --git a/requirements.in b/requirements.in
index 3c47b5107..1e2c0e37d 100644
--- a/requirements.in
+++ b/requirements.in
@@ -1 +1 @@
-zensical==0.0.47
\ No newline at end of file
+zensical==0.0.51
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 0e0b48f7b..411f9bddf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -251,18 +251,18 @@ tomli==2.4.1 \
     --hash=sha256:ff18e6a727ee0ab0388507b89d1bc6a22b138d1e2fa56d1ad494586d61d2eae9 \
     --hash=sha256:ff2983983d34813c1aeb0fa89091e76c3a22889ee83ab27c5eeb45100560c049
     # via zensical
-zensical==0.0.47 \
-    --hash=sha256:1bd94937c48a2e42b5b65b32c5075849937f23cebccaf250d249efa27266e0be \
-    --hash=sha256:2ee29ff819372eaab02ca0f14ac82e804332d898c57c56ffd4d89674f3e5ff71 \
-    --hash=sha256:319cf370ecc6d87da69c935c5acd6e1959dd48954766e9f954319bdb0bec5d36 \
-    --hash=sha256:324f783b22cd0deed0d0f3b69e28d5380b47238a1ef0f25913b88014af2bade2 \
-    --hash=sha256:4162fb8b62f38e6d9b75688c1fb87e18a1cffef5eee51d2c18b79334b548e973 \
-    --hash=sha256:4702605b991bece11494a9bb318d5ba7229f00e5adcc9e6010acd58e9719686b \
-    --hash=sha256:59656bf604a8b03eede4ce1a847640bab1129ab86dec2e39e5bd4b808b1802d2 \
-    --hash=sha256:6f6b2de477c45284201e92301f997415f45f78493bd20f479ea9a1c86bbbbcca \
-    --hash=sha256:77f08ffcc3da9ca2f972330e501927aa7e8e445bfa7b758107edc645acda266e \
-    --hash=sha256:81a13a8bacadedada4847eed4aaa4a3f4ef0e5b78dbb2a2022bc6fb7e7dc9464 \
-    --hash=sha256:944a309be69b11daa8bba46c61fb74f32a98b637f3e7c11135e7cc2a5eccbe32 \
-    --hash=sha256:97ed2b21aba5f788fc39d1597d00938d602b4d2724ed599a1dab7548fe4f0025 \
-    --hash=sha256:cdc2d84f38da809a28402eda5f2b6dbb150e14427f296c5b521e0dfc6a2e8a39
+zensical==0.0.51 \
+    --hash=sha256:12529d3d3991b63820952111dc1d1edc29b2c9b3a3abb16c243bcb649631ebf2 \
+    --hash=sha256:134d776afa526098e05e34713e2f577c075e57a232e01b97842bb0206716afce \
+    --hash=sha256:186ef37e0eee0e969e2cfae47b1b97775e3164e2cba95c71faa4dd6ef47ed009 \
+    --hash=sha256:296dc7a14aa28b81a58eb57df2d5c9c9a4b0de7e90c11d99c943354287952925 \
+    --hash=sha256:3c9579809f88608e7aa2cff516fff9d267d74a843cf6088a5f4227de2f092bb5 \
+    --hash=sha256:67f813a1514a90890ca86248a8d54b81b2164bcbff11a6bcf11b01e1c01a1454 \
+    --hash=sha256:6fa0ecaf14f56841bfc595fa141396350c72aafbec73a016ebe3c824ed21ac72 \
+    --hash=sha256:b1108eae82c6e8ffc33026f60b485c1512647a5333be4f547166b7c8877b98af \
+    --hash=sha256:de25de067bedfa18f916d7f366fd64a7fbf09bfcc615b44d1ddbe3b5fe02ab49 \
+    --hash=sha256:e97ab39668ae3b452c550634e921a0336443743aae5e1fe031c7bb57d049e535 \
+    --hash=sha256:f5d91ce246ed930224603083cef02ae8947132fc7c52901d72015ea03526fa58 \
+    --hash=sha256:f779d2d87b4bf228cf2e279bc0ae6bcf3b36a9335ff283a317d01f7c15ae46b2 \
+    --hash=sha256:fb7ff4946b72168759c6af0a29cf5de4c38aebe633a83292e8cd4145b5213cc2
     # via -r requirements.in
diff --git a/version.json b/version.json
index a49d93085..8be537a69 100644
--- a/version.json
+++ b/version.json
@@ -1,7 +1,7 @@
 {
   "majorVersion": 0,
   "minorVersion": 25,
-  "patchVersion": 0,
+  "patchVersion": 1,
   "suffix": "",
   "isSnapshot": false
 }
\ No newline at end of file