NIIMBOT firmware collection

stable and testing directories contain original firmware images. They are not modified in any way.

Important notes:

Use only the firmware for your printer model.
Do not use different major firmware versions (for example, if you have 5.14, do not flash 6.x).
Usually major firmware version should match the major hardware version. Example: FW 4.13, HW 4.01.
Your device will be bricked if you ignore lines above. Have a nice day.

Flash with niim.blue (instructions). Everything you do is at your own risk.

/stable/B21-C2B/

File Name ↓	File Size ↓	Date ↓
Parent directory/	-	-
B21-C2B_40.33.bin.txt	197 B	2026-Jun-13 12:02
B21-C2B_40.33.bin	106.4 KiB	2026-Jun-13 12:03
B21-C2B_40.23.bin.txt	197 B	2026-Jun-13 12:02
B21-C2B_40.23.bin	99.7 KiB	2026-Jun-13 12:03
B21-C2B_40.19.bin.txt	194 B	2026-Jun-13 12:02
B21-C2B_40.19.bin	95.1 KiB	2026-Jun-13 12:03
B21-C2B_38.10.bin.txt	197 B	2026-Jun-13 12:02
B21-C2B_38.10.bin	91.0 KiB	2026-Jun-13 12:03
B21-C2B_32.06.bin.txt	284 B	2026-Jun-13 12:02
B21-C2B_32.06.bin	88.2 KiB	2026-Jun-13 12:03
B21-C2B_31.03.bin.txt	281 B	2026-Jun-13 12:02
B21-C2B_31.03.bin	79.6 KiB	2026-Jun-13 12:03
B21-C2B_10.31.bin.txt	223 B	2026-Jun-13 12:02
B21-C2B_10.31.bin	103.4 KiB	2026-Jun-13 12:03
B21-C2B_10.17.bin.txt	251 B	2026-Jun-13 12:02
B21-C2B_10.17.bin	108.9 KiB	2026-Jun-13 12:03
B21-C2B_1.04.bin.txt	286 B	2026-Jun-13 12:02
B21-C2B_1.04.bin	135.1 KiB	2026-Jun-13 12:03