Invisible RF Hack

Invisible rf hack or fly hack, you can use it. Your char without being seen by others player. You can use invisible rf hack to hold cora portal in sette. you can now hit monsters or PK without being seen by anyone and but you can't move, if you move, you'll be seen by others.
How to use cheat invisible rf :
1. fly to the max
2. move side step
3. make your high to normal

Its about how high or how deep are you. even though you go underground you are not still invisible if you dont reach the max deep of one map

thx tupeo