Rolling back should be possible per Dell-Cares notes - "We will need to try to rollback to the 1.0.0.1 and please let us know if it helps you. "
Hi, After successfully flashing the newest VBIOS to the Dell RTX 3080 (1.0.0.2 VBIOS with Resizable BAR), I had to restart the PC. After this time my display (Samsung Odyssey G9) went black / no signal. First I think that the RTX is broken, but after some tests I figured out that the VBIOS update broke maybe the DSC Protocol or the DisplayPort 1.4 control. My display uses the Nvidia DSC (Display Stream Compression) protocol with Display Port 1.4 (240Hz / 5120x1440) no problems with VBIOS 1.0.0.0. I can see the Alienware UEFI Logo (Boot) and all is OK. With the VBIOS 1.0.0.2 (with 240Hz / DP 1.4), I cannot see the boot and the Aurora R11 "hangs". No boot in Windows. When I switch the Display from 240Hz / DP 1.4 to 120Hz / DP. 1.4 (No DSC will be used), I cannot see the boot (Alienware Logo) but Windows is starting and the display wake up on the Welcome Screen. When I switch the Display to 60Hz / DP 1.2, I can see the boot (Alienware Logo) and all goes fine into Windows. I can switch IN Windows the Monitor to 240Hz / DP 1.4. All is fine. But if I try with this setting to reboot the Aurora R11 hangs on the next boot again. I think something in the VBIOS is broken. Meanwhile I work with 120Hz. Hopefully this is fixed soon. Anyone else with this problem? 
Aurora R11, RTX 3080 VBIOS 1.0.0.2, no DSC DP 1.4