n900v 5.0 OF1 write cert failed
 

Detected phone model: SM-N900V
Firmware compiled date: Thu Jul 16 21:50:33 KST 2015
PDA version: N900VVRUEOF1
CSC version: N900VVZWEOF1
SW version: unknown
Phone SN: 00000000000
Android version: 5.0 (LRX21V)
Country: USA
HW platform: msm8974
HW Chip: MSM8974
HW Modem: unknown
Codename: hltevzw
Checking Root:
Phone is Rooted.
Checking Certificate file...
Certificate file successfully checked
Writing Certificate...
Writing new phone IMEI...
Writing Certificate failed

this happen if I try to repair security

Detected phone model: SM-N900V
Firmware compiled date: Thu Jul 16 21:50:33 KST 2015
PDA version: N900VVRUEOF1
CSC version: N900VVZWEOF1
SW version: unknown
Phone SN: 00000000000
Android version: 5.0 (LRX21V)
Country: USA
HW platform: msm8974
HW Chip: MSM8974
HW Modem: unknown
Codename: hltevzw
Reading info...
Phone was not found on the selected port!
Performed by 2.3.0 software version

ok now state of phone is this:

Selected port: COM35
Selected model: SM-N900V
Reading info, please wait...
Detected phone model: SM-N900V
Firmware compiled date: Thu Jul 16 21:50:33 KST 2015
PDA version: N900VVRUEOF1
CSC version: N900VVZWEOF1
SW version: N900VVRUEOF1
Phone SN: 00000000000
Android version: 5.0 (LRX21V)
Country: USA
HW platform: msm8974
HW Chip: MSM8974
HW Modem: MSM8974
Codename: hltevzw
Performed by 2.3.0 software version

but phone doesnt accept a non verizon simcard, still says not a verzion sim card

Hello.

Please perform "Unlock" operation, then check whether phone accepts another SIM cards.

I did friend, but phone still doesnt accept a non verizon simcard

Try to reflash the phone, then repeat "Unlock" operation.