Hi! The N32B Slim firmware update 1.1.0 is here. This update brings general performance improvements to the device, and takes SysEx control to a whole new level, making it more precise, more powerful, and simpler to work with than ever before.

What Is SysEx?

System Exclusive, or SysEx, was the main manufacturer-specific way to access deep parameters before standardized mappings became common. It remains essential for many classic devices and is often the main or only practical way to control them on instruments like the Yamaha DX7, the Roland D-50, the Oberheim Matrix 1000, and more.


Checksum Algorithm Support

Many of you have requested this, and it’s finally here. The device now supports Checksum Algorithm calculation, with support for the methods required by the most widely used synths out there. 


To set it up, enter your SysEx message in the editor, select the right algorithm for your device, and set the checksum start index to tell the device which byte to start the calculation from. Your device’s MIDI implementation chart will tell you exactly where that is. The device handles the rest automatically.

SysEx checksum algorithm
SysEx checksum algorithm
  • Roland Generic: used across the entire Roland lineup, including the JD-800, JV series, D-50, and many more. Roland gear has always required a specific checksum calculation to accept SysEx messages correctly. Now the device handles it automatically. Map your knobs to control deep parameters in real time: filter cutoff on the D-50, patch parameters on the JV series, or the sliders of the JD-800.
  • Yamaha Two’s Complement: used by many Yamaha devices and data formats, from the iconic DX7 to the SY77, TG500, and beyond. If you’ve ever tried to edit DX7 operator levels or envelope settings in real time, you know how tedious it can get without the right tools. With the checksum handled automatically, your knobs become a live editor for your Yamaha gear.
  • XOR: used by a range of manufacturers including certain Korg devices. If your device’s MIDI implementation chart specifies an XOR checksum, you’re now covered without any manual calculation.
  • Modulo 128:  a more general checksum method found in various MIDI devices across different brands. Some devices use modulo 128 style checksum schemes, check your device’s MIDI implementation chart to confirm which method it requires.

A Better SysEx Editor

We’ve improved the SysEx UI to make building messages even more intuitive. Add bytes using the plus sign and drag them into the order you want, on the fly. The editor also supports dynamic insertion of MSB (Most Significant Byte) and LSB (Least Significant Byte) values as you turn the knobs. It follows each device’s own specs, covering parameters like pitch, filter cutoffs, and more.

SysEx byte editing
SysEx byte editing

And as always, the editor works on mobile too, so you can configure your SysEx messages from your phone or tablet whenever you need to.

How to Update Your N32B Slim Firmware

Head over to the N32B Slim Firmware Update page to download firmware 1.1.0 and get started. It takes less than a minute.

Talk With Us!

Got questions or feedback? Drop us a message and we’d love to hear how the new SysEx features are working for you. You can also share your experience in our Facebook community or reach us on Instagram.