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 GMC-800 firmware error?		  New Topic  Reply to Topic
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szetaggy

Hungary
6 Posts
Posted - 12/16/2025 :  07:59:06  Show Profile  Reply with Quote
Hello! I have a GMC-800 meter, which since the firmware update 1.20 does not show the uSv/h value correctly. For example: 22CPM-0.22uSv/h, or
25CPM-0.25uSv/h. Is it possible to restore an older firmware, or is there an expected firmware update? Now version 1.21 is up.
Thank you!
Reply #1

EmfDev

2373 Posts
Posted - 12/16/2025 :  17:34:48  Show Profile  Reply with Quote
it is normal. calibration values have been updated that is why you see those numbers.
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