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.

/testing/B21-C2B/

File Name ↓	File Size ↓	Date ↓
Parent directory/	-	-
B21-C2B_37.05.bin	156.7 KiB	2026-Jun-13 12:03
B21-C2B_35.04.bin	132.2 KiB	2026-Jun-13 12:03
B21-C2B_12.07.bin	102.4 KiB	2026-Jun-13 12:03
B21-C2B_12.06.bin	100.5 KiB	2026-Jun-13 12:03
B21-C2B_11.09.bin	100.2 KiB	2026-Jun-13 12:03
B21-C2B_38.08.bin	90.6 KiB	2026-Jun-13 12:03
B21-C2B_38.06.bin	90.0 KiB	2026-Jun-13 12:03
B21-C2B_39.06.bin	82.3 KiB	2026-Jun-13 12:03
B21-C2B_31.07.bin	82.2 KiB	2026-Jun-13 12:03
B21-C2B_39.05.bin	80.5 KiB	2026-Jun-13 12:03
B21-C2B_31.05.bin	80.4 KiB	2026-Jun-13 12:03
B21-C2B_31.06.bin	80.4 KiB	2026-Jun-13 12:03
B21-C2B_20.15.bin	63.1 KiB	2026-Jun-13 12:03
B21-C2B_20.15.bin.txt	264 B	2026-Jun-13 12:02
B21-C2B_12.06.bin.txt	221 B	2026-Jun-13 12:02
B21-C2B_38.06.bin.txt	208 B	2026-Jun-13 12:02
B21-C2B_11.09.bin.txt	205 B	2026-Jun-13 12:02
B21-C2B_38.08.bin.txt	205 B	2026-Jun-13 12:02
B21-C2B_37.05.bin.txt	205 B	2026-Jun-13 12:02
B21-C2B_35.04.bin.txt	205 B	2026-Jun-13 12:02
B21-C2B_39.05.bin.txt	205 B	2026-Jun-13 12:02
B21-C2B_39.06.bin.txt	203 B	2026-Jun-13 12:02
B21-C2B_31.07.bin.txt	203 B	2026-Jun-13 12:02
B21-C2B_12.07.bin.txt	203 B	2026-Jun-13 12:02
B21-C2B_31.06.bin.txt	200 B	2026-Jun-13 12:02
B21-C2B_31.05.bin.txt	199 B	2026-Jun-13 12:02