You can symbolicate a crash log with Xcode 9 fairly easy. Even with bitcode, which give you multiple DSYM files instead of one. Follow the following steps to symbolicate your crash log in 5 easy steps.

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Learn how to symbolicate crash logs with Xcode, understand the IPS and dSYM file formats, and export crash reports using Xcode or the Console app.

Symbolicate crash logs with Xcode