# Opentrons App v7 Updated Labware Definitions

We have an important update regarding the recent Opentrons app v7 software. An issue with the latest update may cause labware definitions to behave unexpectedly.

We recommend updating your Labware definitions with those in the zip below:

{% file src="<https://3271682270-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWKyUXOqIKtqE7cAUE2yQ%2Fuploads%2Fp80zpN4gUmTcmocTrGxy%2Fv7_labware_defs_parhelia_omnistainer.zip?alt=media&token=27ed5b0f-c8b6-4565-8577-16ec99c72e97>" %}
Updated labware for Opentrons App v7 and above
{% endfile %}

[ (or grab the "v7" files from our GitHub page)](https://github.com/parheliabio/ot2-scripts/tree/main/labware)

{% embed url="<https://vimeo.com/user151431853/labware-def-update?share=copy>" %}
How to replace an existing labware definition
{% endembed %}

Fresh protocols from Parhelia Stainworks will automatically load the new labware definitions, but to update previously run protocols, you will need to click "Reanalyze".

{% embed url="<https://vimeo.com/user151431853/reanalyze-existing-protocol?share=copy>" %}
How to reanalyze previously run protocols to update labware def
{% endembed %}

{% hint style="info" %}
Make sure to calibrate the labware definition offset the first time you run a new labware or use it in a deck position for the first time.
{% endhint %}

## Labware Offset Calibration

The updated labware do not require the manual 2 mm up offset like the prior labware.

Calibrate to the calibration points as described on the Opentrons App

{% embed url="<https://vimeo.com/user151431853/labware-offset-calibration?share=copy>" %}
Labware Offset Calibration Walk Tutorial
{% endembed %}

<figure><img src="https://3271682270-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWKyUXOqIKtqE7cAUE2yQ%2Fuploads%2FIH56i7CdoSbrnX0LeGZa%2Fcalibration%20point%20s12%20on%20colplate.jpg?alt=media&#x26;token=52084ae7-3c70-4611-8cca-552cd2d1ab34" alt=""><figcaption><p>Calibration point for S12 with thermal sheath on thermal module is the top of the NorthWest screw</p></figcaption></figure>