never sleep gone

[SilentBob]

Hi,

I've gone and done a dumb thing . I installed ES Task Manager and accidentally clicked the Optimize Power option .
Now my stick goes to sleep after 30 min (= max setting I can go). Moving the slider in ES Task Manager to Never doesn't work.
The line ro.rk.screenoff_time=-1 is in build.prop, but that doesn't fix it.
How do I get the never sleep option back?

thx,
B

[SilentBob]

Well this is awkward. I would've thought this to be a simple problem for the techs around here, my bad.
Re-flash it is then

Grtz,
B