NIIMBOT firmware collection
stable and testing directories contain original firmware images. They are not modified in any way.
Important notes:
Flash with niim.blue (instructions). Everything you do is at your own risk.

/stable/B21_Pro/

File Name  ↓ File Size  ↓ Date  ↓ 
Parent directory/--
B21_Pro_2.20.bin.txt210 B2026-Apr-12 13:11
B21_Pro_2.23.bin.txt240 B2026-Apr-12 13:11
B21_Pro_3.09.bin.txt240 B2026-Apr-12 13:11
B21_Pro_2.21.bin.txt266 B2026-Apr-12 13:11
B21_Pro_3.07.bin.txt267 B2026-Apr-12 13:11
B21_Pro_2.20.bin115.6 KiB2026-Apr-12 13:11
B21_Pro_2.21.bin116.9 KiB2026-Apr-12 13:11
B21_Pro_2.23.bin118.1 KiB2026-Apr-12 13:11
B21_Pro_3.07.bin119.7 KiB2026-Apr-12 13:11
B21_Pro_3.09.bin119.9 KiB2026-Apr-12 13:11