Well Gordon was right--I kept hitting 'Retry' in the nRF Toolbox app and after 100 retries the firmware on my Bangle 2 did indeed successfully update to 2v11 despite all the errors.
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.
Well Gordon was right--I kept hitting 'Retry' in the nRF Toolbox app and after 100 retries the firmware on my Bangle 2 did indeed successfully update to 2v11 despite all the errors.