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# Robot Software Changes from 3.9.0 to 3.10.2 | ||
# Robot OS Changes from 3.10.3 to 3.11.0 | ||
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This update includes a set of all new, high-quality labware definitions! The older definitions are still on your robot and will continue to work, but we **highly** recommend you switch to the new ones. | ||
This update migrates the Opentrons Robot OS to a new underlying technology - buildroot. This change allows us to better control the robot's system and provide better updates without requiring internet connectivity. | ||
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These new labware definitions are based on engineering data from labware manufacturers. They can be viewed using our new [Labware Library][labware-library], where you can browse and search for labware definitions in order to use them in your protocols. Please let us know what you think! | ||
Updating your robot to 3.11.0 will take 5-10 minutes, and your Opentrons App must stay connected to the robot the entire time. | ||
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For more details about this release, please see the full [technical change log][changelog] | ||
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## New Features | ||
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- Added support for new labware definitions! See the [Labware Library][labware-library] and the [Labware API docs][labware-api] for more details | ||
- Added support for newer pipette models | ||
- Added support for setting the flow rate of the pipette during blowout operations. `set_flow_rate` and `set_speed` now take a `blow_out` parameter. See the [API Docs][blowoutflowrate] for more details. | ||
- Store labware calibration separately if a labware is placed on a module. For instance, a well plate on a Temperature Module can now be calibrated separately from a well plate placed on the deck. | ||
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## Bug fixes | ||
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- Increased the height of the pipette in the first step of deck calibration to better account for tip length | ||
- Improved the legacy labware database boot-up process to avoid lost definitions | ||
- Removed usage of an old built-in Python method that was causing a protocol cancellation issue | ||
- Improved the reliability of the run cancellation response to the UI | ||
- Fix an issue where the calibration of v2 labware would vary with repeated calibrations | ||
- Fix an issue that could cause the robot to fail to boot if its previous boot was interrupted | ||
- Fixed an incorrect mix after a blowout during a transfer when `mix_after` and `blow_out` are both specified | ||
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## Known issues | ||
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- While the underlying definition is correct, there is a known API bug that is causing the robot to think a "50ml" tube in a "15/50ml" tube rack is the same height as the "15ml" tube | ||
- When attaching or detaching a pipette from the left mount, the robot homes twice in the X direction | ||
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[labware-library]: https://labware.opentrons.com | ||
[labware-api]: https://docs.opentrons.com/labware.html | ||
[changelog]: https://github.com/Opentrons/opentrons/blob/edge/CHANGELOG.md | ||
[blowoutflowrate]: https://docs.opentrons.com/atomic%20commands.html#controlling-speed |
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