BOSS DR-880 shows only one error message The Program Code in the external ROM is NOT available

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Hi Everyone!The help neededMy Boss DR-880 Dr.Rhythm !After trying to update ,the process failed ,DR-880 freeze out…Local repair service center, can’t restore it
After next switch on , the screen shows only messages like this ( on attachments,)

the over screen shows
1.Device

  1. CDROM OK
  2. Flash -ROM OK
  3. XP < not support.>
  4. ESP               OK

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