# Impinj R420

##### ****Update Firmware****

<span style="white-space: pre-wrap;">To update the firmware on an Impinj R420 reader, you can use either the Web UI or a USB flash drive. The Web UI method involves connecting to the reader's IP address, logging in with the default credentials, and selecting the "Reader Upgrade" section to upload the firmware file. Alternatively, you can format a USB flash drive to FAT, copy the firmware file to it, and insert it into the reader's USB HOST port, where it will automatically upload the firmware. </span>

Using the Web UI:

1. ****Connect to the Reader:****<span style="white-space: pre-wrap;"> Ensure the reader is powered and connected to your network. </span>
2. ****Locate the IP Address:****<span style="white-space: pre-wrap;"> Find the reader's IP address (it may be a default address like </span>`<span class="editor-theme-code">http://169.254.1.1</span>`<span style="white-space: pre-wrap;">). </span>
3. ****Log In:****<span style="white-space: pre-wrap;"> Access the reader's Web UI, and log in using the default credentials: username </span>`<span class="editor-theme-code">root</span>`<span style="white-space: pre-wrap;"> and password </span>`<span class="editor-theme-code">impinj</span>`<span style="white-space: pre-wrap;">. </span>
4. ****Select Reader Upgrade:****<span style="white-space: pre-wrap;"> Navigate to the "Reader Upgrade" section within the Web UI. </span>
5. ****Browse and Select:****<span style="white-space: pre-wrap;"> Click "Browse" to locate the firmware file (.upg) on your computer and select it. </span>
6. ****Upgrade and Reboot:****<span style="white-space: pre-wrap;"> Click "Upgrade" to start the upload. Once complete, click "Reboot" to apply the new firmware. </span>

Using a USB Flash Drive:

1. ****1. Format the Drive:****  
    Format a USB flash drive to FAT.
2. ****2. Copy Firmware:****  
    <span style="white-space: pre-wrap;">Download the firmware file (e.g., .upg) and place it on the flash drive, preferably in a directory structure like </span>`<span class="editor-theme-code">impinj\\revolution\\upgrade\\images\\</span>`.
3. ****3. Insert and Wait:****  
    Insert the flash drive into the reader's USB HOST port while the reader is powered on. The power LED will flash amber during the upload.
4. ****4. Reboot:****  
    <span style="white-space: pre-wrap;">Once the power LED turns solid green, manually reboot the reader to apply the new firmware. </span>