How long does Firmware update take


I just got my Aillio Bullet.

I have RoastTime 3.4.0
plugged in to my Bullet and select Firmware update to latest stable version.

The progress bar is stuck at 0% for a while now (20 minutes) how long does these firmware updates usually take ?

Can I unplug and retry upgrade or what are the steps after this ?


Should take a max of 5 min or so. Something likely happened. Your roaster may already be in bootloader (if it beeped multiple times). You can definitely retry it. If you can’t seem to get it working, our latest beta version has a lot of added fixes for firmware updating you can get on our slack: