Mdm:iOS terminal does not communicate to a MDM server

Question

How do you do?
It is Matsuzaki SHinji.
I want you to teach about Apple MDM.
I am MDM Vendor.
The MDM server is using Apache 2.2.3.
WavDAV is used.
The PUT method is supported.
The contract of an enterprise is completed.
The application of MDM is also completed.
I am using the following URL by webdav.
It has also checked that it was in the state which can be used.
https://www.anetm.com/dav/
It is a thing of APNs.
nj_dev_apns-dev.pem
The "user ID" of subject contained in a nj_dev_apns-dev-key-noenc.pem certificate is "jp.co.nishitele."
APNs is used using the following ruby script.
In the following codes, a device token is ending exchangeably.
"[ -device torkn string 32 length set- ]"
Start Script
#!/usr/bin/ruby -Ku
require 'openssl'
require 'socket' 
    (msg = []) << "[ -device torkn string 32 length set- ]"
    device  = msg.pack("H*")
    socket = TCPSocket.new('gateway.sandbox.push.apple.com',2195)
    context = OpenSSL::SSL::SSLContext.new('SSLv3')
    context.cert = OpenSSL::X509::Certificate.new(File.read('nj_dev_apns-dev.pem'))
    context.key  = OpenSSL::PKey::RSA.new(File.read('nj_dev_apns-dev-key-noenc.pem'))
    ssl = OpenSSL::SSL::SSLSocket.new(socket, context)
    ssl.connect
    payload = <<-EOS
  "mdm":{"<PushMagic>"
EOS
    (message = []) << ['0'].pack('H') << [32].pack('n') << device << [payload.size].pack('n') << payload
    ssl.write(message.join(''))
    ssl.close
    socket.close
End Script
It performs.
The next warning has occurred at the iPhone terminal.
Apr 30 11:04:35 Evangerion-iPhone4S apsd[60] <Warning>: <APSCourier: 0x131e80>: Failed to parse JSON message payload for topic 'jp.co.nishitele': The operation couldn’t be completed. (Cocoa error 3840.)
An iOS terminal does not communicate to a MDM server.
I would like to solve this.
And thank you.
Thank you for your consideration.
He is waiting for the reply.

Answer 1

Is this iPad used? 
iTunes should be version 11
It should be reset to wipe all content from the device and set up as a new device with iTunes.    It should update to IOS 7.0.4