udate from 126.96.36.199 --> 5.7.1 Access denied1 user found helpful
Rename the Concrete directory
Copy up Concrete directory from 5.7.1 zip
run /index.php/ccm/system/upgrade from your browser
This worked like a charm updating from 188.8.131.52 to 184.108.40.206
Is this not possible anymore?
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