AirStash A02 Legacy Support

Note: the following page applies only to the legacy AirStash A02 (Late 2011). For information on the current member of the AirStash family, please see the SanDisk Wireless Stick.

Thank you for your interest in the AirStash A02. This device was introduced in 2011 and is no longer being actively sold or supported. The AirStash A02 was available as part of a co-branding arrangement with Hitachi Maxell from late 2011 to 2013. These devices require a one-time manual firmware update process out of the box. We have observed that some devices are still occasionally available from third-party retailers, and we are providing the information on this page for customers who wish to update their devices.

Note that this update could disable your device if you do not follow the instructions exactly as written. Wearable no longer supports the AirStash A02 and assumes NO LIABILITY for any damage to your device.

How to upgrade the firmware on a Maxell co-branded AirStash A02:


Please read the following instructions carefully before applying the firmware update. The download link for the firmware update file appears after the firmware update.

During an update, AirStash must not turn off due to power loss or the update may permanently damage the unit. To prevent this issue, please make sure AirStash is fully charged and do not disturb the AirStash unit until the update is complete.

  1. Insert a (preferably empty) memory card into your AirStash. You must use a 32GB or smaller SD card for this upgrade.
    • This is vitally important. You must use a SD card which is 32GB or smaller (FAT32 formatted) for this upgrade. Most Maxell-branded AirStash devices sold in the USA include an appropriate card in the box.
    • A larger card formatted to FAT32 may work but is not recommended. 32GB or smaller cards are formatted correctly by default.
  2. Connect your AirStash to a computer. It will show up as a USB drive on your computer.
    • Tip: If there are issues reading the SD card, it might cause the AirStash not to show up on your desktop.  Try it again, or try a different SD card. Ensure you are using a high-quality SD card sold by a reputable vendor. "Off" brands and third-party sellers often sell counterfeit cards which do not work reliably.
  3. Drag the firmware update file (air1105.df2 file) onto the AirStash, making sure to put it in the root or main directory and not in a subfolder.
    • Tip: Make sure the file is approximately 1.2MB in size. Verify you did not download a link or shortcut to the file (if that happens, be sure to right-click and have your browser download the file).
    • Tip: Make sure the filename is exactly as shown on the download page (linked above), namely "air1105.df2"
  4. Tell your computer to eject the AirStash (on a Windows computer, go to My Computer, right click on the AirStash drive, choose Eject. On a Mac, find the AirStash drive on your desktop and right click on it, then choose eject). Do not physically remove your AirStash from your computer.
  5. The update should begin automatically. This will be indicated by the Status Indicator rapidly flashing yellow and green. Please wait; this process may take up to 2 minutes.  If the update process does not begin automatically within 15-20 seconds after you have ejected (step 4), be sure you have ejected the AirStash or done a "safely remove" operation, then disconnect the AirStash from the USB port and plug it in again.
  6. Wait until your AirStash appears as a drive on your computer. This signals that the update is complete.
    • Tip: If the AirStash does not reappear as a mounted drive on your computer, and you have waited for a long duration where the Status Indicator is no longer rapidly flashing yellow and green: unplug the device and plug it back in; then, allow for any remaining rapidly flashing yellow/green lights to stop, and the AirStash should reappear on your computer.
  7. If the update completed successfully, the AirStash should remount onto your computer and the update (air1105.df2) file will no longer be on the AirStash (the file is automatically deleted after a successful upgrade).
  8. Strongly Recommended: After the upgrade, eject your AirStash properly and perform the following factory reset procedure: hold the power button down for 20 seconds until the green & yellow lights blink and it turns on.
  9. As a final double-check, you can verify the firmware upgrade was successful by connecting to the AirStash, running the AirStash app, going to Settings (the gear icon) > About, and checking "Firmware Version".  This should match the version number of the upgrade file you used for the upgrade.
  10. When you connect with the AirStash/AirStash+ app, it will then prompt you to update your AirStash to the latest version, if needed.