j730f patch cert problem

how to solve error
if other firmware done send me link thanks
Chimera Mobile Phone Utility version: 21.25.1302 @ 2019-06-02
Printing phone history

Repair IMEI
6/1/2019
10:19:58
PM

Repair IMEI
6/1/2019
10:19:20
PM

Patch Certificate
6/1/2019
10:16:20
PM

Rmm Unlock
6/1/2019
10:14:02
PM

Knoxguard Unlock
6/1/2019
10:11:28
PM

Patch certificate started
Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-J730F
Sales Code: MID
Country Code: Iraq
Timezone: Asia/Karachi
Android Version: 8.1.0 [M1AJQ] [SDK 27]
Build Date: Tue Apr 16 14:13:11 KST 2019
PDA Version: J730FXWS4BSD3 [april 2019, rev3]
Phone Version: J730FXXU4BSD2 [april 2019, rev2]
CSC Version: J730FOJV4BSD4 [april 2019, rev4]
Product Code: MID
HIDSw Version: J730FXWS4BSD3/J730FOJV4BSD4/J730FXXU4BSD2/J730FXWS4BSD3
Board Platform: EXYNOS5
Modem Platform: SHANNON315
Serial Number: R58K31LKC4Z
Imei: 357074084004542
Unique Number: CCK00CC39615CB4
Connections: AT,MTP
Battery Status: 4.02V (69%)
Network Type: GSM
SIM Status: ABSENT,ABSENT
Multisim Config: DSDS
Knox Version: v30
Warranty Bit: 1
Security Patch: 2019-04-01
Data Encryption State: unencrypted
Preparing...
Checking current patchcert.
Checking modem.
Checking root.
The phone is rooted by: Chimera SU v1.0
Checking boot image. Be patient! Do NOT disconnect the phone!
Writing boot image.
Restarting phone.
Waiting for ADB connection. Be patient! Do NOT disconnect the phone!
Reading data...
Checking modem version.
This modem is not appropriate (J730FXXU4BSD2), because of warranty void (knox is 1). Please downgrade if possible!
Finished at local time: [06.02.19 19:43:04]
WorkID: 61596227