diff --git a/src/BareMetal/BareMetal.Autorest/Properties/AssemblyInfo.cs b/src/BareMetal/BareMetal.Autorest/Properties/AssemblyInfo.cs
new file mode 100644
index 000000000000..e586f0297925
--- /dev/null
+++ b/src/BareMetal/BareMetal.Autorest/Properties/AssemblyInfo.cs
@@ -0,0 +1,26 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the Apache License, Version 2.0 (the ""License"");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an ""AS IS"" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// Code generated by Microsoft (R) AutoRest Code Generator.Changes may cause incorrect behavior and will be lost if the code
+// is regenerated.
+
+using System;
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("Microsoft")]
+[assembly: System.Reflection.AssemblyCopyrightAttribute("Copyright © Microsoft")]
+[assembly: System.Reflection.AssemblyProductAttribute("Microsoft Azure PowerShell")]
+[assembly: System.Reflection.AssemblyTitleAttribute("Microsoft Azure PowerShell - BareMetal")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("0.1.2")]
+[assembly: System.Reflection.AssemblyVersionAttribute("0.1.2")]
+[assembly: System.Runtime.InteropServices.ComVisibleAttribute(false)]
+[assembly: System.CLSCompliantAttribute(false)]
diff --git a/src/BareMetal/BareMetal.Autorest/README.md b/src/BareMetal/BareMetal.Autorest/README.md
index ce404df0c4fc..05feb6c67c4b 100644
--- a/src/BareMetal/BareMetal.Autorest/README.md
+++ b/src/BareMetal/BareMetal.Autorest/README.md
@@ -38,22 +38,17 @@ module-version: 0.1.0
 title: BareMetal
 subject-prefix: $(service-name)
 
-identity-correction-for-post: true
-resourcegroup-append: true
-nested-object-to-string: true
-
-# For new modules, please avoid setting 3.x using the use-extension method and instead, use 4.x as the default option
-use-extension:
-  "@autorest/powershell": "3.x"
-
 directive:
   - where:
       subject: ^AzureBareMetalInstance(.*)
     set:
       subject: $1
   - where:
-      variant: ^Create$|^CreateViaIdentity$|^CreateViaIdentityExpanded$|^Update$|^UpdateViaIdentity$|^GetViaIdentity$
+      variant: ^(Create|Update)(?!.*?(Expanded|JsonFilePath|JsonString))
+      subject-prefix: BareMetal
+    remove: true
+  - where:
+      variant: ^CreateViaIdentity$|^CreateViaIdentityExpanded$|^GetViaIdentity$
       subject-prefix: BareMetal
     remove: true
-
 ```
diff --git a/src/BareMetal/BareMetal.Autorest/docs/Az.BareMetal.md b/src/BareMetal/BareMetal.Autorest/docs/Az.BareMetal.md
index ffe59def87c7..a193e56867db 100644
--- a/src/BareMetal/BareMetal.Autorest/docs/Az.BareMetal.md
+++ b/src/BareMetal/BareMetal.Autorest/docs/Az.BareMetal.md
@@ -1,6 +1,6 @@
 ---
 Module Name: Az.BareMetal
-Module Guid: 4b038ccd-b128-4b3d-be04-8a9921c69093
+Module Guid: 806859af-c1e8-475c-979d-f13b38d60ec1
 Download Help Link: https://learn.microsoft.com/powershell/module/az.baremetal
 Help Version: 1.0.0.0
 Locale: en-US
diff --git a/src/BareMetal/BareMetal.Autorest/docs/Get-AzBareMetal.md b/src/BareMetal/BareMetal.Autorest/docs/Get-AzBareMetal.md
index 332bb70144bb..25bc419b705c 100644
--- a/src/BareMetal/BareMetal.Autorest/docs/Get-AzBareMetal.md
+++ b/src/BareMetal/BareMetal.Autorest/docs/Get-AzBareMetal.md
@@ -148,7 +148,7 @@ This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable
 
 ## OUTPUTS
 
-### Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.Api20210809.IAzureBareMetalInstance
+### Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.IAzureBareMetalInstance
 
 ## NOTES
 
diff --git a/src/BareMetal/BareMetal.Autorest/docs/Update-AzBareMetal.md b/src/BareMetal/BareMetal.Autorest/docs/Update-AzBareMetal.md
index a04342856080..3dfb9462760d 100644
--- a/src/BareMetal/BareMetal.Autorest/docs/Update-AzBareMetal.md
+++ b/src/BareMetal/BareMetal.Autorest/docs/Update-AzBareMetal.md
@@ -24,6 +24,18 @@ Update-AzBareMetal -InputObject <IBareMetalIdentity> [-Tag <Hashtable>] [-Defaul
  [-Confirm] [-WhatIf] [<CommonParameters>]
 ```
 
+### UpdateViaJsonFilePath
+```
+Update-AzBareMetal -Name <String> -ResourceGroupName <String> -JsonFilePath <String>
+ [-SubscriptionId <String>] [-DefaultProfile <PSObject>] [-Confirm] [-WhatIf] [<CommonParameters>]
+```
+
+### UpdateViaJsonString
+```
+Update-AzBareMetal -Name <String> -ResourceGroupName <String> -JsonString <String> [-SubscriptionId <String>]
+ [-DefaultProfile <PSObject>] [-Confirm] [-WhatIf] [<CommonParameters>]
+```
+
 ## DESCRIPTION
 Patches the Tags field of a Azure BareMetal instance for the specified subscription, resource group, and instance name.
 
@@ -75,7 +87,6 @@ Accept wildcard characters: False
 
 ### -InputObject
 Identity Parameter
-To construct, see NOTES section for INPUTOBJECT properties and create a hash table.
 
 ```yaml
 Type: Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.IBareMetalIdentity
@@ -89,12 +100,42 @@ Accept pipeline input: True (ByValue)
 Accept wildcard characters: False
 ```
 
+### -JsonFilePath
+Path of Json file supplied to the Update operation
+
+```yaml
+Type: System.String
+Parameter Sets: UpdateViaJsonFilePath
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -JsonString
+Json string supplied to the Update operation
+
+```yaml
+Type: System.String
+Parameter Sets: UpdateViaJsonString
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
 ### -Name
 Name of the Azure BareMetal on Azure instance.
 
 ```yaml
 Type: System.String
-Parameter Sets: UpdateExpanded
+Parameter Sets: UpdateExpanded, UpdateViaJsonFilePath, UpdateViaJsonString
 Aliases: AzureBareMetalInstanceName
 
 Required: True
@@ -110,7 +151,7 @@ The name is case insensitive.
 
 ```yaml
 Type: System.String
-Parameter Sets: UpdateExpanded
+Parameter Sets: UpdateExpanded, UpdateViaJsonFilePath, UpdateViaJsonString
 Aliases:
 
 Required: True
@@ -125,7 +166,7 @@ The ID of the target subscription.
 
 ```yaml
 Type: System.String
-Parameter Sets: UpdateExpanded
+Parameter Sets: UpdateExpanded, UpdateViaJsonFilePath, UpdateViaJsonString
 Aliases:
 
 Required: False
@@ -140,7 +181,7 @@ Tags field of the AzureBareMetal instance.
 
 ```yaml
 Type: System.Collections.Hashtable
-Parameter Sets: (All)
+Parameter Sets: UpdateExpanded, UpdateViaIdentityExpanded
 Aliases:
 
 Required: False
@@ -190,7 +231,7 @@ This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable
 
 ## OUTPUTS
 
-### Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.Api20210809.IAzureBareMetalInstance
+### Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.IAzureBareMetalInstance
 
 ## NOTES
 
diff --git a/src/BareMetal/BareMetal.Autorest/generate-info.json b/src/BareMetal/BareMetal.Autorest/generate-info.json
index efb7da28df7f..62837e5e7c55 100644
--- a/src/BareMetal/BareMetal.Autorest/generate-info.json
+++ b/src/BareMetal/BareMetal.Autorest/generate-info.json
@@ -1,3 +1,3 @@
 {
-  "generate_Id": "8ac47f73-2bd8-4c01-9857-c8ec51d7cae3"
+  "generate_Id": "44b7941b-5824-4f02-963b-daffa3df1e89"
 }
diff --git a/src/BareMetal/BareMetal.Autorest/resources/README.md b/src/BareMetal/BareMetal.Autorest/resources/README.md
new file mode 100644
index 000000000000..937f07f8fec2
--- /dev/null
+++ b/src/BareMetal/BareMetal.Autorest/resources/README.md
@@ -0,0 +1,11 @@
+# Resources
+This directory can contain any additional resources for module that are not required at runtime. This directory **does not** get packaged with the module. If you have assets for custom implementation, place them into the `..\custom` folder.
+
+## Info
+- Modifiable: yes
+- Generated: no
+- Committed: yes
+- Packaged: no
+
+## Purpose
+Use this folder to put anything you want to keep around as part of the repository for the module, but is not something that is required for the module. For example, development files, packaged builds, or additional information. This is only intended to be used in repositories where the module's output directory is cleaned, but tangential resources for the module want to remain intact.
\ No newline at end of file
diff --git a/src/BareMetal/BareMetal.sln b/src/BareMetal/BareMetal.sln
index 9628c14250e3..12c7622a6556 100644
--- a/src/BareMetal/BareMetal.sln
+++ b/src/BareMetal/BareMetal.sln
@@ -1,4 +1,4 @@
-
+
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.0.31903.59
@@ -19,49 +19,119 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Authenticators", "..\Accoun
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BareMetal", "BareMetal\BareMetal.csproj", "{013FE344-1002-4A45-A03E-079B5F3D69A9}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Az.BareMetal", "..\..\generated\BareMetal\BareMetal.Autorest\Az.BareMetal.csproj", "{3D13FAEF-E53C-4CA4-BAAF-D1F963EE46B5}"
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "BareMetal.Autorest", "BareMetal.Autorest", "{A279DA99-F19B-27D7-F944-9A2E969703B3}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Az.BareMetal", "..\..\generated\BareMetal\BareMetal.Autorest\Az.BareMetal.csproj", "{A12BE46A-6B9D-4A1A-85CB-C0E2E2EB06C5}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
 		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
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-		HideSolutionNode = FALSE
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
 	EndGlobalSection
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+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{CA3C840D-C036-4884-997D-5CB903225E6D} = {7BF066B0-08B0-4C82-A6A5-8182F9D43E92}
@@ -70,5 +140,6 @@ Global
 		{650883E7-A611-40BD-AA30-615B7EB0780B} = {7BF066B0-08B0-4C82-A6A5-8182F9D43E92}
 		{9BB5BF30-FE76-4D12-8C79-F82F49E95BEC} = {7BF066B0-08B0-4C82-A6A5-8182F9D43E92}
 		{775B68BA-EED2-4F57-9254-89F9723E4E25} = {7BF066B0-08B0-4C82-A6A5-8182F9D43E92}
+		{A12BE46A-6B9D-4A1A-85CB-C0E2E2EB06C5} = {A279DA99-F19B-27D7-F944-9A2E969703B3}
 	EndGlobalSection
 EndGlobal
diff --git a/src/BareMetal/BareMetal/Az.BareMetal.psd1 b/src/BareMetal/BareMetal/Az.BareMetal.psd1
index 244de2e6c7da..3251ccfcf82d 100644
--- a/src/BareMetal/BareMetal/Az.BareMetal.psd1
+++ b/src/BareMetal/BareMetal/Az.BareMetal.psd1
@@ -3,7 +3,7 @@
 #
 # Generated by: Microsoft Corporation
 #
-# Generated on: 1/9/2025
+# Generated on: 2025-04-11
 #
 
 @{
@@ -51,19 +51,19 @@ DotNetFrameworkVersion = '4.7.2'
 # ProcessorArchitecture = ''
 
 # Modules that must be imported into the global environment prior to importing this module
-RequiredModules = @(@{ModuleName = 'Az.Accounts'; ModuleVersion = '4.0.1'; })
+RequiredModules = @(@{ModuleName = 'Az.Accounts'; ModuleVersion = '4.1.0'; })
 
 # Assemblies that must be loaded prior to importing this module
 RequiredAssemblies = 'BareMetal.Autorest/bin/Az.BareMetal.private.dll'
 
 # Script files (.ps1) that are run in the caller's environment prior to importing this module.
-# ScriptsToProcess = @()
+ScriptsToProcess = @()
 
 # Type files (.ps1xml) to be loaded when importing this module
-# TypesToProcess = @()
+TypesToProcess = @()
 
 # Format files (.ps1xml) to be loaded when importing this module
-FormatsToProcess = 'BareMetal.Autorest\Az.BareMetal.format.ps1xml'
+FormatsToProcess = 'BareMetal.Autorest/Az.BareMetal.format.ps1xml'
 
 # Modules to import as nested modules of the module specified in RootModule/ModuleToProcess
 NestedModules = @('BareMetal.Autorest/Az.BareMetal.psm1')
@@ -95,7 +95,7 @@ PrivateData = @{
     PSData = @{
 
         # Tags applied to this module. These help with module discovery in online galleries.
-        Tags = 'Azure','ResourceManager','ARM','PSModule','BareMetal'
+        Tags = 'Azure', 'ResourceManager', 'ARM', 'PSModule', 'BareMetal'
 
         # A URL to the license for this module.
         LicenseUri = 'https://aka.ms/azps-license'
@@ -120,7 +120,7 @@ PrivateData = @{
 
     } # End of PSData hashtable
 
- } # End of PrivateData hashtable
+} # End of PrivateData hashtable
 
 # HelpInfo URI of this module
 # HelpInfoURI = ''
diff --git a/src/BareMetal/BareMetal/ChangeLog.md b/src/BareMetal/BareMetal/ChangeLog.md
index 98652fcda28a..c4cfbfa6c355 100644
--- a/src/BareMetal/BareMetal/ChangeLog.md
+++ b/src/BareMetal/BareMetal/ChangeLog.md
@@ -18,6 +18,7 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
+* Introduced various new features by upgrading code generator. Please see detail [here](https://github.com/Azure/azure-powershell/blob/main/documentation/Autorest-powershell-v4-new-features.md).
 
 ## Version 0.1.2
 * Upgraded nuget package to signed package.
diff --git a/src/BareMetal/BareMetal/help/Get-AzBareMetal.md b/src/BareMetal/BareMetal/help/Get-AzBareMetal.md
index d04a987919ef..76aa8df32466 100644
--- a/src/BareMetal/BareMetal/help/Get-AzBareMetal.md
+++ b/src/BareMetal/BareMetal/help/Get-AzBareMetal.md
@@ -149,7 +149,7 @@ This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable
 
 ## OUTPUTS
 
-### Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.Api20210809.IAzureBareMetalInstance
+### Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.IAzureBareMetalInstance
 
 ## NOTES
 
diff --git a/src/BareMetal/BareMetal/help/Update-AzBareMetal.md b/src/BareMetal/BareMetal/help/Update-AzBareMetal.md
index c5cde25fa426..f92c359662f2 100644
--- a/src/BareMetal/BareMetal/help/Update-AzBareMetal.md
+++ b/src/BareMetal/BareMetal/help/Update-AzBareMetal.md
@@ -18,6 +18,18 @@ Update-AzBareMetal -Name <String> -ResourceGroupName <String> [-SubscriptionId <
  [-DefaultProfile <PSObject>] [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
+### UpdateViaJsonString
+```
+Update-AzBareMetal -Name <String> -ResourceGroupName <String> [-SubscriptionId <String>] -JsonString <String>
+ [-DefaultProfile <PSObject>] [-WhatIf] [-Confirm] [<CommonParameters>]
+```
+
+### UpdateViaJsonFilePath
+```
+Update-AzBareMetal -Name <String> -ResourceGroupName <String> [-SubscriptionId <String>] -JsonFilePath <String>
+ [-DefaultProfile <PSObject>] [-WhatIf] [-Confirm] [<CommonParameters>]
+```
+
 ### UpdateViaIdentityExpanded
 ```
 Update-AzBareMetal -InputObject <IBareMetalIdentity> [-Tag <Hashtable>] [-DefaultProfile <PSObject>]
@@ -75,7 +87,6 @@ Accept wildcard characters: False
 
 ### -InputObject
 Identity Parameter
-To construct, see NOTES section for INPUTOBJECT properties and create a hash table.
 
 ```yaml
 Type: Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.IBareMetalIdentity
@@ -89,12 +100,42 @@ Accept pipeline input: True (ByValue)
 Accept wildcard characters: False
 ```
 
+### -JsonFilePath
+Path of Json file supplied to the Update operation
+
+```yaml
+Type: System.String
+Parameter Sets: UpdateViaJsonFilePath
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -JsonString
+Json string supplied to the Update operation
+
+```yaml
+Type: System.String
+Parameter Sets: UpdateViaJsonString
+Aliases:
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
 ### -Name
 Name of the Azure BareMetal on Azure instance.
 
 ```yaml
 Type: System.String
-Parameter Sets: UpdateExpanded
+Parameter Sets: UpdateExpanded, UpdateViaJsonString, UpdateViaJsonFilePath
 Aliases: AzureBareMetalInstanceName
 
 Required: True
@@ -110,7 +151,7 @@ The name is case insensitive.
 
 ```yaml
 Type: System.String
-Parameter Sets: UpdateExpanded
+Parameter Sets: UpdateExpanded, UpdateViaJsonString, UpdateViaJsonFilePath
 Aliases:
 
 Required: True
@@ -125,7 +166,7 @@ The ID of the target subscription.
 
 ```yaml
 Type: System.String
-Parameter Sets: UpdateExpanded
+Parameter Sets: UpdateExpanded, UpdateViaJsonString, UpdateViaJsonFilePath
 Aliases:
 
 Required: False
@@ -140,7 +181,7 @@ Tags field of the AzureBareMetal instance.
 
 ```yaml
 Type: System.Collections.Hashtable
-Parameter Sets: (All)
+Parameter Sets: UpdateExpanded, UpdateViaIdentityExpanded
 Aliases:
 
 Required: False
@@ -190,7 +231,7 @@ This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable
 
 ## OUTPUTS
 
-### Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.Api20210809.IAzureBareMetalInstance
+### Microsoft.Azure.PowerShell.Cmdlets.BareMetal.Models.IAzureBareMetalInstance
 
 ## NOTES