- About SNAP
- Getting Started
- RF Modules
- IoT Gateways
- SNAPconnect E12 Gateway
- SNAPconnect E20 Gateway
- Hardware Setup
- Getting Started
- E20 Software Specifics
- LEDs and Buttons
- Working with the SNAP Module
- Wi-Fi Setup
- Using USB Accessories
- Accessing the microSD Slot
- Factory Restore
- Mounting Instructions
- Technical Specifications
- Regulatory Information and Certifications
- Full Example
- Scaling In Production
Restoring an SNAPconnect E20 to the factory default is accomplished using a microSD card image. Follow the steps below to restore your gateway.
Write new image to a microSD card¶
Using Etcher (Windows, macOS, Linux):¶
Using Etcher, program the microSD card with the downloaded image.
Using dd (command line, Linux/macOS):¶
dd from the command line, where
if is the sdcard image file and
of is the device location of the
microSD card device. For example:
dd if=e20-VERSION-sdcard.img of=/dev/sdX bs=1M sync eject /dev/sdX
Ensure that the
of variable points to the correct microSD card device location before executing this command.
Depending on your system, you may need to use
First, remove power to the SNAPconnect E20. Remove the access cover on the rear of the SNAPconnect E20, and insert the microSD card into the microSD card slot.
Slide the microSD card carrier toward the bottom of the unit (away from the antenna end) about a sixteenth of an inch (1.5 mm). Open the card carrier frame, which is hinged at the top (antenna end) edge. Insert your microSD card, contacts first, with the contacts exposed. Close the card carrier frame, and slide it toward the top of the unit to lock the card in place.
Use microSD to restore E20¶
Hold the button marked
S4, apply power, and release the button.
LEDs 1, 2, and 3 will turn from amber to red when the restore process is in progress. This can take up to 5 minutes or more, depending on factors such as the speed of your microSD card.
The three LEDs will turn green, indicating that the process is complete. Disconnect power from the SNAPconnect E20, remove the microSD card, and reinstall the access cover.
Your SNAPconnect E20 is now restored and ready to use.