diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3de5d9adc..3155eda0f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+#### v2.2.1
+ - Fixed issue #88 (firmware bundle file size). Uses multipart-post now
+
 ### v2.2.0
  - Added the 'rest' and 'update' commands to the CLI
  - Removed the --force option from the create_from_file CLI command
diff --git a/lib/oneview-sdk/resource/firmware_bundle.rb b/lib/oneview-sdk/resource/firmware_bundle.rb
index 733cd5d3d..be10d08bf 100644
--- a/lib/oneview-sdk/resource/firmware_bundle.rb
+++ b/lib/oneview-sdk/resource/firmware_bundle.rb
@@ -8,12 +8,13 @@
 # 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.
+require 'openssl'
+require 'net/http/post/multipart'
 
 module OneviewSDK
   # Firmware bundle resource implementation
   class FirmwareBundle
     BASE_URI = '/rest/firmware-bundles'.freeze
-    BOUNDARY = '----011000010111000001101001'.freeze
 
     # Uploads a firmware bundle file
     # @param [OneviewSDK::Client] client The client object for the OneView appliance
@@ -22,15 +23,28 @@ class FirmwareBundle
     def self.add(client, file_path)
       fail NotFound, "ERROR: File '#{file_path}' not found!" unless File.file?(file_path)
       options = {}
-      options['Content-Type'] = "multipart/form-data; boundary=#{BOUNDARY}"
+      options['Content-Type'] = 'multipart/form-data'
+      options['X-Api-Version'] = client.api_version.to_s
+      options['auth'] = client.token
       options['uploadfilename'] = File.basename(file_path)
-      options['body'] = "--#{BOUNDARY}\r\n"
-      options['body'] << "Content-Disposition: form-data; name=\"file\"; filename=\"#{File.basename(file_path)}\"\r\n"
-      options['body'] << "Content-Type: application/octet-stream; Content-Transfer-Encoding: binary\r\n\r\n"
-      options['body'] << "#{IO.binread(file_path)}\r\n--#{BOUNDARY}--"
-      response = client.rest_post(BASE_URI, options)
-      data = client.response_handler(response)
-      OneviewSDK::FirmwareDriver.new(client, data)
+      url = URI.parse(URI.escape("#{client.url}#{BASE_URI}"))
+
+      File.open(file_path) do |file|
+        req = Net::HTTP::Post::Multipart.new(
+          url.path,
+          { 'file' => UploadIO.new(file, 'application/octet-stream', File.basename(file_path)) },
+          options
+        )
+
+        http_request = Net::HTTP.new(url.host, url.port)
+        http_request.use_ssl = true
+        http_request.verify_mode = OpenSSL::SSL::VERIFY_NONE
+        http_request.start do |http|
+          response = http.request(req)
+          data = client.response_handler(response)
+          return OneviewSDK::FirmwareDriver.new(client, data)
+        end
+      end
     end
   end
 end
diff --git a/lib/oneview-sdk/version.rb b/lib/oneview-sdk/version.rb
index 2bcdeba1c..a7444202f 100644
--- a/lib/oneview-sdk/version.rb
+++ b/lib/oneview-sdk/version.rb
@@ -11,5 +11,5 @@
 
 # Gem version defined here
 module OneviewSDK
-  VERSION = '2.2.0'.freeze
+  VERSION = '2.2.1'.freeze
 end
diff --git a/oneview-sdk.gemspec b/oneview-sdk.gemspec
index c855ba9b5..6334171cd 100644
--- a/oneview-sdk.gemspec
+++ b/oneview-sdk.gemspec
@@ -32,6 +32,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency 'thor'
   spec.add_runtime_dependency 'highline'
   spec.add_runtime_dependency 'pry'
+  spec.add_runtime_dependency 'multipart-post'
 
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'rspec'
diff --git a/spec/unit/resource/firmware_bundle_spec.rb b/spec/unit/resource/firmware_bundle_spec.rb
index 5b08803b1..e4fbcf82c 100644
--- a/spec/unit/resource/firmware_bundle_spec.rb
+++ b/spec/unit/resource/firmware_bundle_spec.rb
@@ -9,17 +9,13 @@
     end
 
     it 'returns a FirmwareDriver resource' do
-      expect(@client).to receive(:rest_post).with(
-        OneviewSDK::FirmwareBundle::BASE_URI,
-        hash_including(
-          'body' => %r{Content-Type: application/octet-stream; Content-Transfer-Encoding: binary\r\n\r\nFAKE FILE CONTENT\r\n--},
-          'uploadfilename' => 'file.tar',
-          'Content-Type' => "multipart/form-data; boundary=#{OneviewSDK::FirmwareBundle::BOUNDARY}"
-        )
-      ).and_return(FakeResponse.new({}))
-      expect(File).to receive('file?').and_return(true)
-      allow(IO).to receive(:binread).and_return('FAKE FILE CONTENT')
-      OneviewSDK::FirmwareBundle.add(@client, 'file.tar')
+      allow_any_instance_of(Net::HTTP).to receive(:request).and_return(FakeResponse.new({}, 200))
+      allow_any_instance_of(Net::HTTP).to receive(:connect).and_return(true)
+      allow(@client).to receive(:response_handler).and_return(uri: '/rest/firmware-drivers/f1')
+      allow(File).to receive(:file?).and_return(true)
+      allow(File).to receive(:open).with('file.tar').and_yield('FAKE FILE CONTENT')
+      allow(UploadIO).to receive(:new).and_return('FAKE FILE CONTENT')
+      expect(OneviewSDK::FirmwareBundle.add(@client, 'file.tar').class).to eq(OneviewSDK::FirmwareDriver)
     end
   end
 end