Upgrading tool software may lead to process deviations. Sometimes, a
bug fix may introduce new bugs with unwanted consequences
(e.g., recipe modifications).
Other example: Fixing a bug in the MFC calibration routine may lead to process excursions.
A software update is usually necessary to:
- Add new or additional hardware components (sensors, MFC, wafer handler, ECS, etc.)
- Improve tool and/or software performance
If all chambers of the same tools exhibit process excursions, check the
tool software and find out if an update is available. Make sure you
create a bachup copy of the current software before installing the
new one.
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