A Stratux that shows no status light, never broadcasts its Wi-Fi network, or has become unreliable almost always has a full or corrupt microSD card. Rewriting the card with a fresh Stratux image takes about 15 minutes and fixes the vast majority of cases.

You will need

• A computer with an SD card reader (Windows, Mac or Linux).
• The microSD card from the Stratux, or a new card of 8 GB or more.

Steps

1. Power the Stratux off, remove its microSD card and put it in your computer's card reader.
2. Go to stratux.me and download the latest Stratux build. Choose Save so you have the file on disk.
3. Extract the downloaded zip. You should end up with a file ending in .img.
4. Download and install balenaEtcher, a free tool that writes disk images to SD cards.
5. Open Etcher, click Select image and choose the .img file. Select the SD card if it asks, then click Flash. Expect 5 to 10 minutes.
6. When it finishes, Windows may say the card needs to be formatted. Do not format it. Click Cancel; the card is written correctly and simply uses a format Windows cannot read.
7. Eject the card, put it back in the Stratux and power it on. The status light should come on and the stratux Wi-Fi network should appear within a minute or two.

If it still will not boot

• Try a different, known-good microSD card. Cards do wear out.
• Check the battery or power supply. A weak supply causes exactly the same symptoms.
• The Stratux community at r/stratux is the best resource for hardware faults beyond that.