Nanoleaf Outdoor String Lights Firmware Issue

Hi, i have a string of exterior Nanoleaf string lights. When i try and upgrade them from 2.1.19 to 3.0.23 the lights will go green as they download the firmware then flip back to normal color around 92 percent then complete the full download at 100 percent. Then when you look back at the app a few hours later, it’s reverted back to 2.1.19. I’ve powercycled the lights, and the network and always do the upgrade right next to the lights. Please assist?