Here, you will find what changes were made in each firmware version. To check your current firmware version, open the Paper app, then tap the FiftyThree logo in the upper left corner of the screen. Select Pencil from the menu. Pair Pencil if it hasn't already been paired, and the firmware version will be displayed in this menu. You can learn how to upgrade your firmware here.
- v55 - Initial manufacturing build.
- v74 - Automatic reconnect support and bug fixes.