A520F after imei repair no service

Chimera Mobile Phone Utility version: 20.65.1410 @ 2019-04-01
Printing phone history

Patch Certificate
4/1/2019
11:02:34
AM

Repair IMEI
4/1/2019
9:47:44
AM

Get info started
Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-A520F
Sales Code: CDR
Country Code: Dominican Republic
Timezone: Africa/Kampala
Android Version: 8.0.0 [R16NW] [SDK 26]
Build Date: Sat Feb 2 00:13:39 KST 2019
PDA Version: A520FXXS8CSB2 [february 2019, rev2]
Phone Version: A520FXXU8CSB2 [february 2019, rev2]
CSC Version: A520FUWA8CSB1 [february 2019, rev1]
Product Code: CDR
HIDSw Version: A520FXXS8CSB2/A520FUWA8CSB1/A520FXXU8CSB2/A520FXXS8CSB2
Board Platform: EXYNOS5
Modem Platform: SHANNON325
Serial Number: R58JB1N8M1K
Imei: 358970254884531
Unique Number: CBJ000F5BB2AFA4
Connections: AT,MTP
Battery Status: 3.80V (25%)
Network Type: GSM
SIM Status: READY,ABSENT
Multisim Config: DSDS
Knox Version: v30
Warranty Bit: 0
Security Patch: 2019-02-01
Data Encryption State: encrypted
Successfully finished.
Finished at local time: [04.01.19 14:09:06]
WorkID: 56052183

Sir i need cert file for this phone or any solution:confused::confused::confused: