TE250 year 11, starts ok, acelerates ok 'till 4k revs, then cuts.

UPDATE:

after two weeks checking for the error, we've found it. It's funny, the firts thing we checked and discarded, was the thing actually causing problem. But, it was not an isolated issue, here is the story:
Checked fuel pump initially, pressure was ok. So, that was not the issue(until that moment)
Plugged ibeat, there were lots of errors, reset them
There was an error with the tilt sensor, or the thing replacing it, at the end, I was not really clear on that thing.
Reset TPS, still same problem.
Checked plug cable, was ok, initially.
Then, after no clue of what was going on with the bike, we did another round testing.
Checked the fuel pump after 10 mins with the bike running, it lost about 30% of the pressure, and when I tried to accelerate, the pump was delivering gas, but not enough to make engine go further than 4k revs. Ok, at that point had to replace the pump. No big issue. Replaced the pump, tested the bike, and still some acceleration fails.. Random "FAIL" on the screen.
Went to electric side of things and discovered the cable going to the injector, having some sulfates on it, causing the FAIL message on the screen. Fixed the cable.
Checked Ohms on the plug cable, was zero, almost zero, thats ok, BUT, the plug cap, was broken a bit, and with some movement, it was unable to transmit the electric spark to the plug, and that made some damage to the plug tip too.
Changed plug cable and spark plug, replaced fuel pump, and bike is running better than never now :-), spent 230 USD on the repair and 2 weeks :-(
Happy to have my bike running again, good thing, rainy season started already in Costa Rica, so, muddy days are here, good bye dusty season

Glad you are up and running.