# OTA DFU For For Arduino Opta

**URL:** <https://discuss.blues.com/t/ota-dfu-for-for-arduino-opta/3178>\
**Category:** Hardware\
**Created:** [July 21, 2025, 9:17pm UTC](https://discuss.blues.com/t/ota-dfu-for-for-arduino-opta/3178 "2025-07-21T21:17:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kdl](https://avatars.discourse-cdn.com/v4/letter/k/4af34b/32.png) [@kdl](https://discuss.blues.com/u/kdl)\
**Post date:** [July 21, 2025, 9:17pm UTC](https://discuss.blues.com/t/ota-dfu-for-for-arduino-opta/3178/1 "2025-07-21T21:17:38Z")

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Can Wireless for Opta perform OTA DFU for Arduino Opta? Preferably Outboard DFU but would settle for traditional OTA if necessary.

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**Author:** ![RobLauer](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/roblauer/32/1567_2.png) [@RobLauer](https://discuss.blues.com/u/RobLauer)\
**Post date:** [July 22, 2025, 2:33pm UTC](https://discuss.blues.com/t/ota-dfu-for-for-arduino-opta/3178/2 "2025-07-22T14:33:17Z")

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Hi @kdl,

While the Portenta H7 in the Opta does support Outboard Firmware Update when wired correctly, there aren’t enough AUX bus connections between the Opta and the expansion to facilitate its use. You can however use [IAP firmware updates](https://dev.blues.io/notehub/host-firmware-updates/iap-firmware-update/#using-iap-firmware-update).

Thanks,  
Rob