Electric OCARINA OF TIME for Nintendo Switch™ 2 - Firmware update instruction
Firmware Update Notice – Electric OCARINA OF TIME –
Please follow the instructions below to update your product's firmware.
Update Details
Additional playing methods have been added to the fingerings in Free Play Mode.
One additional fingering type has been added for each of the following notes:
D♯ / E♭
The updated fingering chart is available below.
Fingering Chart
Applicable Products
This update applies to products with serial numbers (S/N) ranging from 261A00001 to 261A80380.
Please check the serial number on the back of your product to confirm whether this update applies to your unit.

Update Procedure
You can update the firmware by following the procedure below.
Step 1. Download the firmware.
A dedicated firmware update file is required. Please download it using the link below.
Download FirmwareStep 2. Launch the update application.
After downloading, launch "NSX-261 update_V077".
Step 3. Connect the Ocarina to your PC.
Open the battery cover of the product and connect a USB cable to the internal USB Type-C™ port.
Connect the USB cable to your PC while holding down the Play Button.
Step 4. Start the firmware update.
After connecting the product, press [DOWNLOAD] in the update application to start the update.
Step 5. Confirm that the update is complete.
The update is complete when the progress reaches 100% and [Device Ver] displays 0.77.
Step 6. Disconnect the product and reinstall the batteries.
Once the update is complete, disconnect the USB cable from the product and your PC.
Insert three AA alkaline batteries, then close the battery cover.