Important: Spresense Website Migration Announcement. Click for more details
The Spresense project website will be migrated to a new domain under Sony Semiconductor Solutions on January 16, 2026. The new website URL will be announced at a later date. Please stay tuned for further updates.
Downloads for Spresense Main Board
On this page you will find all information and files related to the Spresense Main board.
This release introduces a new bootloader that must be loaded prior to use, along with several feature enhancements and new example codes. For more details please refer to the release notes.
Resources
How to flash bootloader?
There are several methods to flash the bootloader onto your Spresense main board. Depending on your preference and setup, you can choose from the following options: Arduino Setup Guide, SDK CLI Guide, Visual Studio Code Guide
Recovery Guide
If you see the message "D>" on the serial console with 115200 baud rate or cannot upload your sketch, it means some files in the flash memory may be corrupted unexpectedly.
You can resolve this issue by downloading our recovery tool. For comprehensive instructions on usage, refer to the README enclosed within the downloaded ZIP file. Be sure to select the appropriate version based on the operating system of choice.
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Resources
How to flash bootloader after recovery?
There are several methods to flash the bootloader onto your Spresense main board. Depending on your preference and setup, you can choose from the following options: Arduino Setup Guide, SDK CLI Guide, Visual Studio Code Guide
