diff --git a/charts/longhorn/README.md b/charts/longhorn/README.md
index 4f1ffe2..fabc0ab 100644
--- a/charts/longhorn/README.md
+++ b/charts/longhorn/README.md
@@ -20,7 +20,7 @@
 ## Prerequisites
 
 1. A container runtime compatible with Kubernetes (Docker v1.13+, containerd v1.3.7+, etc.)
-2. Kubernetes >= v1.21
+2. Kubernetes >= v1.25
 3. Make sure `bash`, `curl`, `findmnt`, `grep`, `awk` and `blkid` has been installed in all nodes of the Kubernetes cluster.
 4. Make sure `open-iscsi` has been installed, and the `iscsid` daemon is running on all nodes of the Kubernetes cluster. For GKE, recommended Ubuntu as guest OS image since it contains `open-iscsi` already.
 
@@ -94,33 +94,33 @@
 | Key | Type | Default | Description |
 |-----|------|---------|-------------|
 | image.csi.attacher.repository | string | `"longhornio/csi-attacher"` | Repository for the CSI attacher image. When unspecified, Longhorn uses the default value. |
-| image.csi.attacher.tag | string | `"v4.8.0"` | Tag for the CSI attacher image. When unspecified, Longhorn uses the default value. |
+| image.csi.attacher.tag | string | `"v4.8.1"` | Tag for the CSI attacher image. When unspecified, Longhorn uses the default value. |
 | image.csi.livenessProbe.repository | string | `"longhornio/livenessprobe"` | Repository for the CSI liveness probe image. When unspecified, Longhorn uses the default value. |
 | image.csi.livenessProbe.tag | string | `"v2.15.0"` | Tag for the CSI liveness probe image. When unspecified, Longhorn uses the default value. |
 | image.csi.nodeDriverRegistrar.repository | string | `"longhornio/csi-node-driver-registrar"` | Repository for the CSI Node Driver Registrar image. When unspecified, Longhorn uses the default value. |
 | image.csi.nodeDriverRegistrar.tag | string | `"v2.13.0"` | Tag for the CSI Node Driver Registrar image. When unspecified, Longhorn uses the default value. |
 | image.csi.provisioner.repository | string | `"longhornio/csi-provisioner"` | Repository for the CSI Provisioner image. When unspecified, Longhorn uses the default value. |
-| image.csi.provisioner.tag | string | `"v4.0.1-20250204"` | Tag for the CSI Provisioner image. When unspecified, Longhorn uses the default value. |
+| image.csi.provisioner.tag | string | `"v5.2.0"` | Tag for the CSI Provisioner image. When unspecified, Longhorn uses the default value. |
 | image.csi.resizer.repository | string | `"longhornio/csi-resizer"` | Repository for the CSI Resizer image. When unspecified, Longhorn uses the default value. |
-| image.csi.resizer.tag | string | `"v1.13.1"` | Tag for the CSI Resizer image. When unspecified, Longhorn uses the default value. |
+| image.csi.resizer.tag | string | `"v1.13.2"` | Tag for the CSI Resizer image. When unspecified, Longhorn uses the default value. |
 | image.csi.snapshotter.repository | string | `"longhornio/csi-snapshotter"` | Repository for the CSI Snapshotter image. When unspecified, Longhorn uses the default value. |
-| image.csi.snapshotter.tag | string | `"v7.0.2-20250204"` | Tag for the CSI Snapshotter image. When unspecified, Longhorn uses the default value. |
+| image.csi.snapshotter.tag | string | `"v8.2.0"` | Tag for the CSI Snapshotter image. When unspecified, Longhorn uses the default value. |
 | image.longhorn.backingImageManager.repository | string | `"longhornio/backing-image-manager"` | Repository for the Backing Image Manager image. When unspecified, Longhorn uses the default value. |
-| image.longhorn.backingImageManager.tag | string | `"v1.7.2-rc1"` | Tag for the Backing Image Manager image. When unspecified, Longhorn uses the default value. |
+| image.longhorn.backingImageManager.tag | string | `"v1.8.1"` | Tag for the Backing Image Manager image. When unspecified, Longhorn uses the default value. |
 | image.longhorn.engine.repository | string | `"longhornio/longhorn-engine"` | Repository for the Longhorn Engine image. |
-| image.longhorn.engine.tag | string | `"v1.7.2-rc1"` | Tag for the Longhorn Engine image. |
+| image.longhorn.engine.tag | string | `"v1.8.1"` | Tag for the Longhorn Engine image. |
 | image.longhorn.instanceManager.repository | string | `"longhornio/longhorn-instance-manager"` | Repository for the Longhorn Instance Manager image. |
-| image.longhorn.instanceManager.tag | string | `"v1.7.2-rc1"` | Tag for the Longhorn Instance Manager image. |
+| image.longhorn.instanceManager.tag | string | `"v1.8.1"` | Tag for the Longhorn Instance Manager image. |
 | image.longhorn.manager.repository | string | `"longhornio/longhorn-manager"` | Repository for the Longhorn Manager image. |
-| image.longhorn.manager.tag | string | `"v1.7.2-rc1"` | Tag for the Longhorn Manager image. |
+| image.longhorn.manager.tag | string | `"v1.8.1"` | Tag for the Longhorn Manager image. |
 | image.longhorn.shareManager.repository | string | `"longhornio/longhorn-share-manager"` | Repository for the Longhorn Share Manager image. |
-| image.longhorn.shareManager.tag | string | `"v1.7.2-rc1"` | Tag for the Longhorn Share Manager image. |
+| image.longhorn.shareManager.tag | string | `"v1.8.1"` | Tag for the Longhorn Share Manager image. |
 | image.longhorn.supportBundleKit.repository | string | `"longhornio/support-bundle-kit"` | Repository for the Longhorn Support Bundle Manager image. |
-| image.longhorn.supportBundleKit.tag | string | `"v0.0.51"` | Tag for the Longhorn Support Bundle Manager image. |
+| image.longhorn.supportBundleKit.tag | string | `"v0.0.52"` | Tag for the Longhorn Support Bundle Manager image. |
 | image.longhorn.ui.repository | string | `"longhornio/longhorn-ui"` | Repository for the Longhorn UI image. |
-| image.longhorn.ui.tag | string | `"v1.7.2-rc1"` | Tag for the Longhorn UI image. |
+| image.longhorn.ui.tag | string | `"v1.8.1"` | Tag for the Longhorn UI image. |
 | image.openshift.oauthProxy.repository | string | `""` | Repository for the OAuth Proxy image. Specify the upstream image (for example, "quay.io/openshift/origin-oauth-proxy"). This setting applies only to OpenShift users. |
-| image.openshift.oauthProxy.tag | float | `""` | Tag for the OAuth Proxy image. Specify OCP/OKD version 4.1 or later (including version 4.15, which is available at quay.io/openshift/origin-oauth-proxy:4.15). This setting applies only to OpenShift users. |
+| image.openshift.oauthProxy.tag | string | `""` | Tag for the OAuth Proxy image. Specify OCP/OKD version 4.1 or later (including version 4.15, which is available at quay.io/openshift/origin-oauth-proxy:4.15). This setting applies only to OpenShift users. |
 | image.pullPolicy | string | `"IfNotPresent"` | Image pull policy that applies to all user-deployed Longhorn components, such as Longhorn Manager, Longhorn driver, and Longhorn UI. |
 
 ### Service Settings
@@ -141,6 +141,8 @@
 | persistence.backingImage.enable | bool | `false` | Setting that allows you to use a backing image in a Longhorn StorageClass. |
 | persistence.backingImage.expectedChecksum | string | `nil` | Expected SHA-512 checksum of a backing image used in a Longhorn StorageClass. |
 | persistence.backingImage.name | string | `nil` | Backing image to be used for creating and restoring volumes in a Longhorn StorageClass. When no backing images are available, specify the data source type and parameters that Longhorn can use to create a backing image. |
+| persistence.backupTargetName | string | `"default"` | Setting that allows you to specify the backup target for the default Longhorn StorageClass. |
+| persistence.dataEngine | string | `"v1"` | Setting that allows you to specify the data engine version for the default Longhorn StorageClass. (Options: "v1", "v2") |
 | persistence.defaultClass | bool | `true` | Setting that allows you to specify the default Longhorn StorageClass. |
 | persistence.defaultClassReplicaCount | int | `3` | Replica count of the default Longhorn StorageClass. |
 | persistence.defaultDataLocality | string | `"disabled"` | Data locality of the default Longhorn StorageClass. (Options: "disabled", "best-effort") |
@@ -259,6 +261,10 @@
 | Key | Default | Description |
 |-----|---------|-------------|
 | annotations | `{}` | Annotation for the Longhorn Manager DaemonSet pods. This setting is optional. |
+| defaultBackupStore | `{"backupTarget":null,"backupTargetCredentialSecret":null,"pollInterval":null}` | Setting that allows you to update the default backupstore. |
+| defaultBackupStore.backupTarget | `nil` | Endpoint used to access the default backupstore. (Options: "NFS", "CIFS", "AWS", "GCP", "AZURE") |
+| defaultBackupStore.backupTargetCredentialSecret | `nil` | Name of the Kubernetes secret associated with the default backup target. |
+| defaultBackupStore.pollInterval | `nil` | Number of seconds that Longhorn waits before checking the default backupstore for new backups. The default value is "300". When the value is "0", polling is disabled. |
 | enableGoCoverDir | `false` | Setting that allows Longhorn to generate code coverage profiles. |
 | enablePSP | `false` | Setting that allows you to enable pod security policies (PSPs) that allow privileged Longhorn pods to start. This setting applies only to clusters running Kubernetes 1.25 and earlier, and with the built-in Pod Security admission controller enabled. |
 | namespaceOverride | `""` | Specify override namespace, specifically this is useful for using longhorn as sub-chart and its release namespace is not the `longhorn-system`. |
@@ -286,23 +292,19 @@
 | defaultSettings.backupCompressionMethod | Setting that allows you to specify a backup compression method. |
 | defaultSettings.backupConcurrentLimit | Maximum number of worker threads that can concurrently run for each backup. |
 | defaultSettings.backupExecutionTimeout | Number of minutes that Longhorn allows for the backup execution. The default value is "1". |
-| defaultSettings.backupTarget | Endpoint used to access the backupstore. (Options: "NFS", "CIFS", "AWS", "GCP", "AZURE") |
-| defaultSettings.backupTargetCredentialSecret | Name of the Kubernetes secret associated with the backup target. |
-| defaultSettings.backupstorePollInterval | Number of seconds that Longhorn waits before checking the backupstore for new backups. The default value is "300". When the value is "0", polling is disabled. |
 | defaultSettings.concurrentAutomaticEngineUpgradePerNodeLimit | Maximum number of engines that are allowed to concurrently upgrade on each node after Longhorn Manager is upgraded. When the value is "0", Longhorn does not automatically upgrade volume engines to the new default engine image version. |
 | defaultSettings.concurrentReplicaRebuildPerNodeLimit | Maximum number of replicas that can be concurrently rebuilt on each node. |
 | defaultSettings.concurrentVolumeBackupRestorePerNodeLimit | Maximum number of volumes that can be concurrently restored on each node using a backup. When the value is "0", restoration of volumes using a backup is disabled. |
 | defaultSettings.createDefaultDiskLabeledNodes | Setting that allows Longhorn to automatically create a default disk only on nodes with the label "node.longhorn.io/create-default-disk=true" (if no other disks exist). When this setting is disabled, Longhorn creates a default disk on each node that is added to the cluster. |
 | defaultSettings.defaultDataLocality | Default data locality. A Longhorn volume has data locality if a local replica of the volume exists on the same node as the pod that is using the volume. |
 | defaultSettings.defaultDataPath | Default path for storing data on a host. The default value is "/var/lib/longhorn/". |
-| defaultSettings.defaultLonghornStaticStorageClass | Default Longhorn StorageClass. "storageClassName" is assigned to PVs and PVCs that are created for an existing Longhorn volume. "storageClassName" can also be used as a label, so it is possible to use a Longhorn StorageClass to bind a workload to an existing PV without creating a Kubernetes StorageClass object. The default value is "longhorn-static". |
+| defaultSettings.defaultLonghornStaticStorageClass | Default name of Longhorn static StorageClass. The "storageClassName" is assigned to PVs and PVCs that are created for an existing Longhorn volume. The "storageClassName" can also be used as a label, so it is possible to use a Longhorn StorageClass to bind a workload to an existing PV without creating a Kubernetes StorageClass object. The "storageClassName" needs to be an existing StorageClass. The default value is "longhorn-static". |
 | defaultSettings.defaultReplicaCount | Default number of replicas for volumes created using the Longhorn UI. For Kubernetes configuration, modify the `numberOfReplicas` field in the StorageClass. The default value is "3". |
 | defaultSettings.deletingConfirmationFlag | Flag that prevents accidental uninstallation of Longhorn. |
 | defaultSettings.detachManuallyAttachedVolumesWhenCordoned | Setting that allows automatic detaching of manually-attached volumes when a node is cordoned. |
 | defaultSettings.disableRevisionCounter | Setting that disables the revision counter and thereby prevents Longhorn from tracking all write operations to a volume. When salvaging a volume, Longhorn uses properties of the "volume-head-xxx.img" file (the last file size and the last time the file was modified) to select the replica to be used for volume recovery. This setting applies only to volumes created using the Longhorn UI. |
 | defaultSettings.disableSchedulingOnCordonedNode | Setting that prevents Longhorn Manager from scheduling replicas on a cordoned Kubernetes node. This setting is enabled by default. |
 | defaultSettings.disableSnapshotPurge | Setting that temporarily prevents all attempts to purge volume snapshots. |
-| defaultSettings.rwxVolumeFastFailover | Turn on logic to detect and move RWX volumes quickly on node failure. |
 | defaultSettings.engineReplicaTimeout | Timeout between the Longhorn Engine and replicas. Specify a value between "8" and "30" seconds. The default value is "8". |
 | defaultSettings.failedBackupTTL | Number of minutes that Longhorn keeps a failed backup resource. When the value is "0", automatic deletion is disabled. |
 | defaultSettings.fastReplicaRebuildEnabled | Setting that allows fast rebuilding of replicas using the checksum of snapshot disk files. Before enabling this setting, you must set the snapshot-data-integrity value to "enable" or "fast-check". |
@@ -327,6 +329,7 @@
 | defaultSettings.replicaZoneSoftAntiAffinity | Setting that allows Longhorn to schedule new replicas of a volume to nodes in the same zone as existing healthy replicas. Nodes that do not belong to any zone are treated as existing in the zone that contains healthy replicas. When identifying zones, Longhorn relies on the label "topology.kubernetes.io/zone=<Zone name of the node>" in the Kubernetes node object. |
 | defaultSettings.restoreConcurrentLimit | Maximum number of worker threads that can concurrently run for each restore operation. |
 | defaultSettings.restoreVolumeRecurringJobs | Setting that restores recurring jobs from a backup volume on a backup target and creates recurring jobs if none exist during backup restoration. |
+| defaultSettings.rwxVolumeFastFailover | Setting that allows Longhorn to detect node failure and immediately migrate affected RWX volumes. |
 | defaultSettings.snapshotDataIntegrity | Setting that allows you to enable and disable snapshot hashing and data integrity checks. |
 | defaultSettings.snapshotDataIntegrityCronjob | Setting that defines when Longhorn checks the integrity of data in snapshot disk files. You must use the Unix cron expression format. |
 | defaultSettings.snapshotDataIntegrityImmediateCheckAfterSnapshotCreation | Setting that allows disabling of snapshot hashing after snapshot creation to minimize impact on system performance. |
@@ -340,8 +343,10 @@
 | defaultSettings.systemManagedPodsImagePullPolicy | Image pull policy for system-managed pods, such as Instance Manager, engine images, and CSI Driver. Changes to the image pull policy are applied only after the system-managed pods restart. |
 | defaultSettings.taintToleration | Taint or toleration for system-managed Longhorn components. Specify values using a semicolon-separated list in `kubectl taint` syntax (Example: key1=value1:effect; key2=value2:effect). |
 | defaultSettings.upgradeChecker | Upgrade Checker that periodically checks for new Longhorn versions. When a new version is available, a notification appears on the Longhorn UI. This setting is enabled by default |
+| defaultSettings.upgradeResponderURL | The Upgrade Responder sends a notification whenever a new Longhorn version that you can upgrade to becomes available. The default value is https://longhorn-upgrade-responder.rancher.io/v1/checkupgrade. |
 | defaultSettings.v1DataEngine | Setting that allows you to enable the V1 Data Engine. |
-| defaultSettings.v2DataEngine | Setting that allows you to enable the V2 Data Engine, which is based on the Storage Performance Development Kit (SPDK). The V2 Data Engine is a preview feature and should not be used in production environments. |
+| defaultSettings.v2DataEngine | Setting that allows you to enable the V2 Data Engine, which is based on the Storage Performance Development Kit (SPDK). The V2 Data Engine is an experimental feature and should not be used in production environments. |
+| defaultSettings.v2DataEngineCPUMask | CPU cores on which the Storage Performance Development Kit (SPDK) target daemon should run. The SPDK target daemon is located in each Instance Manager pod. Ensure that the number of cores is less than or equal to the guaranteed Instance Manager CPUs for the V2 Data Engine. The default value is "0x1". |
 | defaultSettings.v2DataEngineGuaranteedInstanceManagerCPU | Number of millicpus on each node to be reserved for each Instance Manager pod when the V2 Data Engine is enabled. The default value is "1250". |
 | defaultSettings.v2DataEngineHugepageLimit | Setting that allows you to configure maximum huge page size (in MiB) for the V2 Data Engine. |
 | defaultSettings.v2DataEngineLogFlags | Setting that allows you to configure the log flags of the SPDK target daemon (spdk_tgt) of the V2 Data Engine. |