Otto Web Updater v4

Otto Web Updater

Version: 1.4 (22.05.2026)

Language

Firmware updater

Play while waiting?

Quick 15-second Scratch clicker

Score: 0 | 15s

Full erase before flash (always on)

Idle 0%

Ready to update your Otto firmware.

Show technical log

Drivers & Help

Recommended for reliable flashing: Connect USB, hold BOOT, click Update, and release BOOT only after percentages start moving.

If you don't see "USB-Serial (COM#)" in the list, your PC is missing the driver:

Windows Mac Linux

Refresh this page and try to "FLASH" again.

If more issues: Discord

Tutorial Click to open

Step

Select your Otto USB-Serial device in the Chrome popup

Make sure Otto is plugged in and turned ON.

Connecting Otto with USB cable

BOOT

Hold BOOT

Press and hold the BOOT button on Otto.

30s

Tip: release BOOT when flashing starts.

OK

Otto Updated Successfully

Nice work. Your robot is ready for the next step.

Your first Otto firmware update is complete. Turn Otto OFF and ON, then open the HP Otto app or the web app to connect. From now on, future library updates can be installed wirelessly from the app.

1Turn Otto OFF and ON

2Open the app below

3Connect and keep creating

Open Web App

Get the HP Otto App

Scan this universal QR code on your phone or tablet. It works for both iOS and Android.

Universal QR code for the HP Otto mobile app

Open Google Play Open App Store