Comprehensive analysis of how the system handles .sub files with
multiple frequencies.
Key findings:
- Standard Flipper Zero files contain ONE frequency per file
- Multiple .sub files in one upload: WORKS correctly
- Multiple Frequency: lines in one file: Only last used (silent loss)
- Recommended: Add validation warning for multi-frequency edge case
Analysis includes:
- Current parser behavior
- Flipper Zero file format specification
- 4 solution options with pros/cons
- Testing scenarios
- Impact assessment
- Short-term and long-term recommendations
