S21 Ultra Touch screen not working after 6.1 update

[Nyeric]

My replacement LCD stopped working after the 6.1 update is there a way to downgrade back to the 6.0 version? I have a problem looking for an older version of this firmware  G998BXXSBGXDH. 

[Robin999]

Can't give you advice that could potentially brick your device. If it was an authorised Samsung replacement screen, then reach out to Samsung, as they may offer a free repair. If non authorised, then you'll be charged.

[Members_pDiYkhC]

they are blaming replacement screens but mine is original screen with same problem!!

[sousa99990]

I have voriginal one and having tge same problem