I was allowed to change the DVD zone for 3 times, unaware that the zone will be permanently set, i change the DVD zone thrice now it's permanently set to one zone and i am not able to open any other zone DVD. I checked everything and it says that i can't do anything now. Please let me know if there's any solution. I am really upset and worried.
You didn’t say what DVD drive you have, but you may be able to find cracked firmware for it that will make the DVD drive multi-regional. Alternatively DVD drives are so cheap nowadays that you could get another drive and set that to the desired region and use the original drive for the alternative region.