Samsung UE26C4000 - help, please!

[erdem_ua]

I think your version number is too low to hack... Anyway, please read WIKI pages for C series devices. Some hacks might work for your device too.
If they works, please let us know.
Thanks

[juusso]

No, you do not get Internet@Tv on your model (never?).

[juusso]

you can try to change model in service menu and might you`re lucky and get wireless feature unlocked.
I dont know to which model have you turn, you should try it by self. Be awared, changing models (as well as changing other hidden menu values chaotically) could brick your tv.
Before to start, change watchdog to off,
rs232 to debug and take all possible photos of all service submenus. If you change smth you always ccan restore it.

C series have debug on VGA, check wiki about ExLink for C series (no audio socket for service!)