I moved to an E373 from an SX900 believe it or not. The SX900 had a fairly simple method for importing Styles from a USB flash drive. Since the E373 does not have a USB flash drive port, what is the best strategy for loading in Styles via the E373's USB host port? I did find an earlier post about this with a response (below) from Michael. If this is the only way, can anyone provide more detail on exactly how to do this using the iPad app? I was not able to find info about this in the manual. I thought Jeremy See or some other YouTuber mentioned that the E373 only had room for about 10 new Styles and another poster mentioned the Style must be below 50KB and has to be SFF1 format.
The PSR-E363 doesn't have a USB TO DEVICE port for plugging in a USB thumb drive, so the external style file(s) would need to be transferred into the keyboard's internal storage memory from a connected computer using Yamaha's MusicSoft utility.
I think there are only two such utilities available, unless Yamaha has added more versions-- the Yamaha MusicSoft Downloader program for Windows, and the Yamaha MusicSoft Manager app for iPadOS or iPhoneOS. As far as I know, there is no version for the macOS.