Shamsfromuzbekistan Posted March 28, 2017 Report Share Posted March 28, 2017 I have a problem with updating o.s with u90 ladder to m91-2-r34, please help Link to comment Share on other sites More sharing options...
Shamsfromuzbekistan Posted March 28, 2017 Author Report Share Posted March 28, 2017 The updating i began and stopped, I mean not finished, bootsrap mode, I have tried another com,pprt but same results, I'm tired Link to comment Share on other sites More sharing options...
Shamsfromuzbekistan Posted March 28, 2017 Author Report Share Posted March 28, 2017 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. Link to comment Share on other sites More sharing options...
MVP 2023 Flex727 Posted March 28, 2017 MVP 2023 Report Share Posted March 28, 2017 Contact support@unitronics.com for help with this issue. Link to comment Share on other sites More sharing options...
Shamsfromuzbekistan Posted March 31, 2017 Author Report Share Posted March 31, 2017 Thank you very much, it was bad usb to rs232 converter. It's ok now. Link to comment Share on other sites More sharing options...
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