EL731 Series Firmware Update 1.62
If you are located in Australia or New Zealand, click here to open the correct page.
Welcome to the Littelfuse EL731 series firmware update page. To review all changes provided in firmware version 1.62, and to confirm if it will be necessary to update your EL731 units, please carefully review the Product Change Notice linked below.
The firmware on the EL731 can be updated in the field or updated at the Littelfuse factory at no charge.
- To update in the field, an AC700-CUA-00 Firmware Update Card will be provided to you. The AC700-CUA-00 card is inserted into the communications card slot in the EL731, and the unit is connected to a PC running Littelfuse SE-Flash software. Please review the EL731 Firmware Update Instructions document linked below to be aware of the procedure to update in the field.
- To update at the factory, an RMA number will be provided to you for the EL731 relays to be shipped back to the Littelfuse factory. Littelfuse will cover shipping costs to and from the factory.
If you wish to proceed with updating EL731 units, please fill in the registration form on the side of the page, including the upgrade method. After receiving the registration, Littelfuse (or a designated partner in your region) will reach out to you to confirm and complete next steps.
For any additional questions, please contact our technical support team at relays@littelfuse.com or 1-800-832-3873.
Important Documents:
- Product Change Notice EL731 Firmware Version 1.62
- EL731 Firmware Update Instructions
- SE-Flash PC Software
- Windows drivers for AC700-CUA-00 Card