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Shamsfromuzbekistan

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  1. Thank you very much, it was bad usb to rs232 converter. It's ok now.
  2. It's 7-8 years old plc, and I can't update o.s with. U90 6.6.28 . Please tell me how can I do it.
  3. The updating i began and stopped, I mean not finished, bootsrap mode, I have tried another com,pprt but same results, I'm tired
  4. I have a problem with updating o.s with u90 ladder to m91-2-r34, please help
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