strange G920F after write cert
 

After rooting with "S6_UniKernel_v8-0002-ODIN" file, I successfully wrote a new cert in a g920f with z3x 23.3 version.
Once done,I flashed latest original firmware(downloaded from sammobile,many variants tested),but the phone will not boot,even after hard reset..only Samsung logo.
I tried to flash S6_UniKernel_v8-0002-ODIN again,and the phone boots correctly.

In bootloader menu,I can read:

dm-verity verification failed...
Need to check DRK first...

even after flashing stock firmware,in download mode I read:

System status: custom

Any suggestion?

Theres nothing strange. You just havent read anything regarding this issue and you arent paying attention to the obvious errors. You wrote a new IMEI, breaking the DRK.

bro there are firmware 4 file in xda forum and you will pass hung on logo