z130 certificate write failed

Platform: Samsung Tizen
Selected port: COM28
Selected model: SM-Z130H
Selected file: C:\Documents and Settings\Administrator\Desktop\z130
\Cert_SM-Z130H_357394061478828.cert
Select Certificate2…
Selected file: C:\Documents and Settings\Administrator\Desktop\z130
\Cert_SM-Z130H_357395061478825.cert
Searching for a phone. Please wait…
Found phone on COM28
Reading info…
SW version:
Z130HDDU0BOB2/Z130HODD0BOB2/Z130HDDU0ANL8/Z130HDDU0BO
B2
HW Version: SM-Z130HZWDINS
Phone IMEI A:
Phone IMEI B:
Phone SN: RZ1G12LFP7
Checking Certificate file…
Certificate file successfully checked
Please check if then phone was rooted and ‘USB debugging" is
enabled!
Writing Certificate failed

whats wrong