There is the C# application in the install folder that demonstrates erasing/writing the SFlash data. It should be modifiable for reading the SFlash instead. (I also ran into this issue, but found it was easier to write an application to read the SFlash into RAM on the chip, and observer with the debugger instead of messing with the C# application)
Thanks! I was able to modify the C# application to read from SFlash.