Thank you for your inquiry.
The STM32G4 package is already on our ToDo and will most likely be added within the next month.
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Keep in mind, this is not a support forum. Its main purpose is user to user interaction.
Our engineers will try to answer your questions between their projects if possible but this can be delayed by longer periods of time.
Should you be entitled to support you can contact us via our support system: segger.com/ticket/ Or you can contact us via e-mail.