Flash files not working

[Goći]

Just downloaded the XFA and SRR flash files, but when i tried flashing my S21 Ultra I received the Error: Secure check failed (PIT), what might be the problem?

[Nelerh]

You have to unlock the bootloader first, but that will void your warranty if your phone is still new.

[Goći]

How do I do that

[Nelerh]

You do that by enabling developer options and then toggle on OEM unlocking there, after that, your data will be wiped. Once the phone is booted turn it off press volume + and volume - then insert the cable from pc or computer, you will see the bootloader options there. And when you're flashing make sure your files are all extracted and goodluck.

[Goći]

Thanks, and this will fix the Secure check failed PIT problem when I flash my phone?

[Nelerh]

👍🏿

[Goći]

Thanks