I have MikroTik RB2011UI AS-RM my I.T guy said THEDUDE doesn't support my router because it's old, so please help me out.
it is not supported for dude.
there is a list of supported systems (from wiki):
Tile - CCR series hardware
ARM - RB3011, RB1100AHx4 Dude Edition (RB1100Dx4)
mmips - hEX (RB750Gr3)
RouterOS x86 installations
RouterOS CHR environment