mmm i read somewhere in this comunity that the solution for this problem is trying to update with other bluetooth device..... maybe in other computer..... are you using to update an internal bluetooth of a laptop???

I've tried on multiple pc's, with bluetooth, USB to serial converters but nothing works

Oh nvm,

Tried again via bluetooth and it seems to works now

Back to making a vid of my omnibot!

hahaha sometime happens.... aha!.. good luck