# Updating firmware for host Arduino
**URL:** https://discuss.blues.com/t/updating-firmware-for-host-arduino/403
**Category:** Troubleshooting
**Created:** [August 31, 2021, 12:16am UTC](https://discuss.blues.com/t/updating-firmware-for-host-arduino/403 "2021-08-31T00:16:25Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@NathanJC](https://discuss.blues.com/u/NathanJC)
#### Post date: [August 31, 2021, 12:16am UTC](https://discuss.blues.com/t/updating-firmware-for-host-arduino/403/1 "2021-08-31T00:16:25Z")
Hi there,
I am currently trying to set up a notecard to monitor a remote sensor system. I have set up a small example with a Seeeduino Xiao microcontroller running as the host for the Notecard. The Xiao is basically a tiny Arduino that runs off an Atmel SAMD21 processor.
The main problem I am running into is that I will need to be able to send firmware updates to the Seeeduino over the air. I have followed the blues dev article on [Updating ESP32 Host Firmware](https://dev.blues.io/notecard/notecard-guides/updating-esp32-host-firmware/). Do you know if anyone has made a version of this code that works for an Arduino host?
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### Author:  [@GybeCrew](https://discuss.blues.com/u/GybeCrew)
#### Post date: [June 20, 2023, 10:55pm UTC](https://discuss.blues.com/t/updating-firmware-for-host-arduino/403/2 "2023-06-20T22:55:15Z")
I’d be interested in hearing if you succeeded in updating the Seeed Xaio SAMD21, I’m looking into this as well.