Definitely try and use the Firmware Updater in the App Loader if you can now - it ensures all the firmware is on the watch before doing anything drastic, so it's a lot harder to get into that situation!
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Great - glad it's fixed!
Definitely try and use the Firmware Updater in the App Loader if you can now - it ensures all the firmware is on the watch before doing anything drastic, so it's a lot harder to get into that situation!