1.Search your unit stat "HP,ATK,DEF,REC" with SB Game Hacker.
P.S:The HP,ATK,DEF,REC must be base level stat, if not find your unit base level stat at wiki or any site. And make sure your unit doesn't equip any spheres.
2.There must be at least 4 result, find the value that same as your unit base hp, keep press until an option pop out, then choose "View Bound Memory".
3.Pull up and you'll see your unit Max level DWBF, if you did not find it, try another HP value.
4.Click that value, press edit and change the value to your current unit level.
5.Now you can evolve your unit without Max level.
Heres a video link to help u understand more
I used tridon lvl 16 ....you need to look for base HP of lvl 1 tridon or ny unit you want to try tridon base hp is 3225