Chimera n976n flashing and root error

[sweetboy]

Chimera Mobile Phone Utility version: 41.21.2034 @ 2024-11-14
Firmware update started
Processing firmware...
Waiting for download mode.
Connecting.
SBL Info: Model: SM-N976N, Region: KOR, Provider: SINGLE, PDA: N976NKSU2HWH5
Checking PIT file: D2X_KOR_SINGLE.pit
Writing PIT to phone.
Reading PIT from phone.
Trying to Autoroot. Be patient! Do NOT disconnect the phone!
Autoroot succeeded.
Flashing boot.img
Flashing recovery.img
Flashing vbmeta.img
Flashing dt.img
Firmware flash failed.
Finished at local time: [11.14.24 14:43:05]
WorkID: 322962442

on phone screen written only official released binaries are allowed to flash

need help to root it please

 

[ChimeraTool]

Chimera Mobile Phone Utility version: 41.21.2034 @ 2024-11-14
Firmware update started
Processing firmware...
Waiting for download mode.
Connecting.
SBL Info: Model: SM-N976N, Region: KOR, Provider: SINGLE, PDA: N976NKSU2HWH5
Checking PIT file: D2X_KOR_SINGLE.pit
Writing PIT to phone.
Reading PIT from phone.
Trying to Autoroot. Be patient! Do NOT disconnect the phone!
Autoroot succeeded.
Flashing boot.img
Flashing recovery.img
Flashing vbmeta.img
Flashing dt.img
Firmware flash failed.
Finished at local time: [11.14.24 14:43:05]
WorkID: 322962442

on phone screen written only official released binaries are allowed to flash

need help to root it please

Dear User,

As I can see you were trying to change the KG state on this device just before this procedure, so I assume you are getting this error because the device is KG locked.
After changing the KG state to "Checking" you should unlock the bootloader, then flash a KG patched ROM on the device instead of a stock ROM.

Best Regards,
ChimeraTeam