Lame dude. It's 5 bucks. Well worth it.
Damn. TetherMe enables the "set up personal hotspot" button but I can't enable tethering unless I call Sprint.
This is the sole reason for me to jailbreak.
Yeah yeah it's only been one day. I know. Hopefully it gets sorted out.
It should be working. You need these things installed for it to work. Mobile substrate, preference loader, network cmds, tether me. Make sure you use the official tether me.
Once you reboot or power cycle the device you will loose all these items. You will have to reinstall them.
Also tether me doesn't work on 64bit devices. Perhaps why it's working well on my 4S.