Cannot update Fairbuds, 50 % battery

Hi! I’m using v3.4 of the Android Fairbuds app. I’m trying to update to latest Fairbuds version. Case light is solid green when plugged in. Android Bluetooth settings reports 100% battery. App has “New software update” panel which takes me to an update screen (below) offering version 65, but says: “You need at least 50 % of battery to start a update.”

App also has a number of defects and usability issues I’ll gloss over. Model is [AUFEAR-1WH-WW1] Fairbuds (White). App reports Fairbuds is v56.

Things I’ve tried include:

  • Uninstall/reinstall app
  • Unpair/pair
  • Reset (flashing blue, flashing white)