Using KT200 ECU Programmer to read Mahindra EDC17C63 TC1724 OK, after writing it pops up “End writing. Address 018000. non-erasable sector in Bench Mode”.


Possible Solution:
OTP, wrong file, or wrong mod. Other tools may skip it, KT has a option to "clone", on menu "Bench, tools, clone" If you can write ori, mostlikely is bad file, with different otp areas...

or Bad checksum, try to do it manual and write again.Try with original without tune and see if is working.
BTY, I have “KT300” link below, Need to connect your kt200 to pc to start kt300, and it will automatically do checksum calcaltion for EDC17. 
https://www.ecuhelpshop.com/pages/downloads/