UNSUPPORTED_READER_VERSION

Terminal.confirmPaymentIntent was called from a reader with an unsupported reader version. You will need to update your reader to the most recent version in order to accept payments. We suggest you prompt your user update the reader via the update flow that you have implemented using Terminal.checkForUpdate and Terminal.installAvailableUpdate.

https://stripe.com/docs/terminal/readers/bbpos-chipper2xbt#bbpos-chipper-2x-bt-software-releases