root permission gone?

[Guest ieon]

Im very new to andoid (last friday)... and have jumped into unlocking, rooting, and flashing roms... Im running a nexus one unlocked, performed root, then have flashed several different roms, wiping between each flash... i had some network problems with sense alpha 7 & 9 and have reverted back to kspec custom rom... now my torch app and setcpu no longer work, stating insufficient permissions... can anyone please advise? thank you

[Guest natehinn]

I'm actually having the same problem. I just flashed back to my stock nexus rom, but now my SU page just hangs, entirely black. Same when I try opening any program needing su permissions. I have the SU icon, but I don't know why its hanging. I've wiped and reflashed to no avail. Maybe its my recovery image? Im using amon ra's 1.5.3...any tips would be cool...

[Guest natehinn]

Just an update, I fixed my problem by reinstalling superboot. Don't know if that helps, but thats what worked for me.

[Guest xkonni]

Just an update, I fixed my problem by reinstalling superboot. Don't know if that helps, but thats what worked for me.

when loosing root after a restoring a nandroid backup, this is usually a permission problem.

Run this to fix the permissions:

adb shell chmod 4755 /system/xbin/su