Total agreement on Anthony's impeccable service, now about rideability. I have a 2015 Super Tenere ES, which has the worst fueling (throttle response) of any motorcycle I have ever ridden, not sure what Yamaha was thinking of on this one. The problems have been listed here, so I will just add my experience with the reflash. Sport mode; previous to the flash this mode was completely unusable, this is now the default mode on my bike and with good reason, the throttle picks up smoothly and cleanly at any RPM, the bike pulls hard from idle with no throttle by lawyer present at all. Engine braking has been reduced to an agreeable amount, consistent with other free reving twins I have ridden. In this mode I am now completely comfortable opening the throttle mid corner, even while holding significant lean angle, which was pretty sketchy before. I also find myself downshifting into corners while trail braking at the edge of traction, which was totally off the table in either of the old maps, the fueling has been improved that much. I even found myself in some really slimy mud in S mode and was able to modulate throttle easily while in first gear to control wheel spin in trac 2. Really impressive.
In Touring mode, the light switch throttle is also gone, replaced by smooth fueling and the ability to use steady throttle at any RPM, which was not possible before, making this the preferred off road mode. The radicle change in response at 3,000 RPM is also gone allowing me to concentrate on throttle/traction connection and not riding around abnormalities engineered into the bike. Engine braking is increased from S mode but lessened from the original map, spot on for my taste. The motorbike's one glaring deficiency is now gone, replaced by excellent fueling and 2 distinct throttle maps that are perfectly suited to their purposes.
Traction control; Trac 1, prior to reflash the system would completely shut the power down, the bike falling on it's face and then sign back on with too much force causing wheel spin and shutting down violently again, no good at all off road, and really funky on road in the rain. Reflashed the bike accelerates to the limit of traction for it's given circumstance and stutters the throttle, completely preventing wheel spin, I tested this in mud and on gravel. Excellent. One of my favorite things about the bike is trac 2 and long slow power slides on the gravel roads in Michaux State Forrest near my house, this has not been changed, but is more tractable. Roll into a corner sideways off throttle, roll on way too much power and let the computer do it's magic while I look like some expert flat track rider doing a power slide through the corner. Incredible.
This bike was a bit of a chore to ride in it's stock form, making rapid pavement riding dangerous and off road riding frustrating. Even hitting the brake to disengage cruise control was obnoxious making me use the clutch to disengage it. I literally found myself riding around the horrible throttle response all the time and trying to come up with new ways to ride to make the bike work properly. After the reflash the bike just works, no need to be creative, just be a rider and focus on being smooth and fast. Amazing. If you have a Super Tenere, having Anthony reflash your ECU should be done immediately, it is hands down the best money one can spend on the bike. This simple fix takes a flawed bike that clearly has potential and unlocks all its beauty. Like polishing a diamond.