Very strange. The inability to open the firmware uploader in the app should not be affected by the firmware already on the device.
Something else just occurred to me… in the new update, I added a feature to skip the update if the user skipped it once already to avoid pestering the user. It’s in the meter preferences page, which you can access from the gear icon in the top right of the metering page (page with the numbers). You can also launch the firmware updater directly from the meter preferences page.
Let me know if this works for you. Thanks!