I had the same problem with this OS version.
- local file upload lead to an error
- usb file upload lead to an error
we uploaded via TFTP which worked well
regards
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Michael Arnold
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Original Message:
Sent: Feb 05, 2019 03:04 AM
From: TANAWAT PHOTIRANG
Subject: Can't upgrade firmware by Local file.
Hi,
I have a problem with upgade firmware.
I just try firmware upgarde and downgrade on 2 patition using local file.
After click upgrade error show "ERROR IN UPGRADE".
I don't know why.
Need help please.
Thank you.