Firmware update
Altair
Update your device
Connect the Altair to this computer with a USB cable and install the firmware straight from this page. Nothing to download or install first.
How to do it
- Plug the Altair into this computer with a USB cable. It must be a data cable — some charging cables have no data wires and the device will not appear.
- Press Connect & install above.
- Your browser will ask which device to use. Pick the serial port that appears
(typically
usbserial,wchusbserialorSLAB) and choose Connect. - Choose Install. You will be asked whether to erase the device first — leave that unticked to keep your Wi-Fi and settings. Tick it only if you want the device back to factory-new.
- Leave it alone for about two minutes. Do not unplug the cable while it is writing.
What an update keeps
Your Wi-Fi network, paired headphones, favourites and Start choice are kept — as long as you leave “erase device” unticked when the installer asks. They are stored separately from the software, so replacing the software does not touch them.
Tick that box and the device goes back to factory-new: it will ask you to set up Wi-Fi again from scratch.
Setting up a brand-new device
A device that has never been set up starts with no Wi-Fi network saved, so the first thing it shows is Wi-Fi setup. On your phone, join the network it names on screen, and your phone should open the setup page by itself. Pick your home network, enter its password, and the device restarts and joins it.
Wi-Fi details are stored on the device only. They are never part of the firmware, so the file this page installs is the same for everybody — which is also why an update cannot overwrite them.
If it does not appear
- Try the other end of the cable, or a different cable — this is by far the most common cause.
- Close any other program that might be holding the port (Arduino IDE, a serial monitor).
- On Windows you may need the USB-to-serial driver for the board’s
CH340chip.