Understand FIT checksum repair and data recovery
A valid checksum and a complete activity are separate properties.
Read the guide ↗Field guide / 02Export recovered FIT records to GPX and CSV
Choose a range without silently changing original activity totals.
Read the guide ↗Field guide / 03Read FIT timestamp and developer-field findings
Distinguish a parseable message from a trustworthy measurement.
Read the guide ↗