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- X421FLF1BIOS · 16.0 MB · 10 May 2025BIOS 304—16.0 MB
- X421FL R2.0 GREENBIOS · 16.0 MB · 6 May 2025BIOS bin—16.0 MB
- ASUS X421FL REV2.0 BIOS telegram BIOS Repair-2025-09-16BIOS · 5.75 MB · 18 Sept 2025BIOS zip—5.75 MB
- X421FL R2.0 GREEN
Firmware archive for a board labelled X421FL revision 2.0, with the extra tag GREEN, in a 10.7 MB RAR.
BIOS · 10.7 MB · 29 Apr 2021BIOS rar—10.7 MB - ASUS X421FL REV2.0 BIOS
BIOS firmware for the ASUS X421FL motherboard, revision 2.0, stored in an 11.0 MB RAR archive.
BIOS · 11.0 MB · 25 Sept 2022BIOS rar—11.0 MB - ASUS X421FL R2.0 BIOS OK
BIOS dump for the ASUS X421FL mainboard at revision 2.0, marked OK, which usually means it was tested and works.
BIOS · 10.8 MB · 8 Oct 2026BIOS rar—10.8 MB