For config file writing OTP should be unlocked in UFS. UFS OTP unlocking steps are described here
STEPS
1. OPEN EASYJTAG CLASSIC SUITE (TOOL)
2. CONNECT UFS
3. GO TO GENERAL — UNLOCK CONFIG
4. DONE
For config file writing OTP should be unlocked in UFS. UFS OTP unlocking steps are described here
STEPS
1. OPEN EASYJTAG CLASSIC SUITE (TOOL)
2. CONNECT UFS
3. GO TO GENERAL — UNLOCK CONFIG
4. DONE