wich rx 580 graphics cards have dual bios or bios switch

[WINTERLORD]

id like to get into flashing the bos an such but wondered what rx 580 gpu's have a bios switch or somthin so if i fail my first time im not at a loss of a gpu

 

[tubagznyven]

saphire rx 580 nitro + have dual bios mate

 

[WINTERLORD]

does anyone know if the xfx gigabyte or msi has a dual bios?

 

[tubagznyven]

does anyone know if the xfx gigabyte or msi has a dual bios?

from spesification in the official website its no info,so it means no
only saphire that have dual bios
http://sapphirenitro.sapphiretech.com/en/580-8.html