How many miles have you done? I experienced this around the 600 mark and others have commented as well. There are some theories behind it.
The bike was at about 2700 miles when the FI flashed, and at 3000 the next day when the directional lights flashed. I did some 'light reading' of the factory shop manual last night about it and I can say that the display ONLY flashed "FI", no "FI ERROR" or warning light ever came on. I tried running the error code self diagnostic test today but no error code came up.
This week I will pull the battery and check those connections. I really doubt they are anywhere close to loose as I was especially careful when installing the aux fuze block to make sure all battery connections were TIGHT.
I'll just keep an eye on it and take note if it happens again.