Writing Certificate failed

Platform: Samsung Android
Selected port: COM5
Selected model: SM-A5000
Selected file: H:\GALAXXY FRIMWARE certAndqcn\A5000\Cert-SM-A5000_356023061012805.cert
Select Certificate2…
Selected file: H:\GALAXXY FRIMWARE certAndqcn\A5000\Cert-SM-A5000_356022061012856.cert
Please, press "OK" button on the phone to allow USB debugging..
Detected phone model: SM-A5000
Firmware compiled date: Wed Sep 16 16:20:42 KST 2015
PDA version: A5000ZCU1AOI2
CSC version: A5000CHC1AOI2
SW version: A5000ZCU1AOI2
Phone IMEI: 356022061010801
Phone SN: 00000000000
Android version: 4.4.4 (KTU84P)
Checking Root:
Phone is Rooted.
Checking Certificate file…
Certificate file successfully checked
Writing Certificate…
Phone connected successfully
Writing new phone IMEI…
Writing Certificate failed