Hi Keyboard Master,
The iOS app "MusicSoft Manager" is definitely compatible with the PSR-S770. You may have connected the iPhone to the USB-to-DEVICE socket on the S770 (where you usually connect the USB stick). This doesn't work, you definitely have to use the USB-to-
HOST socket.
You didn't mention what type of port your iPhone has. If it has a
Lightning port, do the following:
- On the S770 press "Function > Menu 1 >
MIDI" and make sure that the preset MIDI template "
All Parts" is activated. Then press the "Exit" button.
- Connect the USB
B plug of a standard "
USB type AB" cable (also called "Printer Cable") to the USB-to-
HOST socket of the S770.
- Connect the USB
A plug of this cable to an Apple "Lightning to USB
3 Camera Adapter". (A simple "Lightning to USB Camera Adapter" also works. However, then the iPhone cannot be charged at the same time using the power adapter.)
- You connect the Lightning plug of the Apple Camera Adapter to the iPhone.
- Finished. Now the MusicSoft Manager app should be able to find the connected keyboard, in your case the S770.
![Smiley :)](http://www.psrtutorial.com/forum/Smileys/default/smiley.gif)
P.S.
You can find pictures of the adapters and cables mentioned here in this thread:
>>>
https://www.psrtutorial.com/forum/index.php/topic,57828.msg448663.html#msg448663Hope this helps!
Best regards,
Chris