Operations Guide
7.2.5 Reboot and fallback procedures
After failing to boot ve times within 90 seconds, the reader will fall back to the previous image and attempt
to boot again. This behavior enables the reader to boot when the main boot image is corrupt or has other
issues.
7.2.6 Preserving the RFID interface during an upgrade
In some cases when upgrading to Impinj R700 Reader rmware version 8.0 or higher from rmware before
8.0, the upgrade process will select the IoT Device Interface by default. Here is a workaround to avoid
unexpectedly switching the interface. It is useful for CAPs as well as other clients.
1. Set the RFID interface to one you don’t wish to use.
2. Next, set the interface to the preferred one.
3. Upgrade to Impinj R700 Reader rmware, version 8.0.
The result should be an upgrade with the preferred RFID interface selected.
Here is a second workaround, which works for programmatic clients (either CAPs running on the reader or
external clients), which works both before and after the upgrade to 8.0.
1. Check which interface is selected before issuing RFID commands.
2. Set the interface to the correct one if necessary, using either RShell or API endpoints.
Note: the RFID interface is a shared resource and can be changed in multiple ways:
1. From the WebUI
2. From the RShell interface
3. From the Host Conguration portion of the IoT Device Interface API
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