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/B3S/

File Name ↓	File Size ↓	Date ↓
Parent directory/	-	-
B3S_1.14.bin	141.4 KiB	2026-Apr-12 13:11
B3S_5.03.bin	123.4 KiB	2026-Apr-12 13:11
B3S_10.29.bin	111.0 KiB	2026-Apr-12 13:11
B3S_10.23.bin	110.7 KiB	2026-Apr-12 13:11
B3S_38.11.bin	100.1 KiB	2026-Apr-12 13:11
B3S_38.05.bin	98.6 KiB	2026-Apr-12 13:11
B3S_37.07.bin	98.2 KiB	2026-Apr-12 13:11
B3S_35.18.bin	95.7 KiB	2026-Apr-12 13:11
B3S_20.09.bin	87.0 KiB	2026-Apr-12 13:11
B3S_30.07.bin	86.4 KiB	2026-Apr-12 13:11
B3S_21.05.bin	79.0 KiB	2026-Apr-12 13:11
B3S_20.09.bin.txt	300 B	2026-Apr-12 13:11
B3S_1.14.bin.txt	280 B	2026-Apr-12 13:11
B3S_10.23.bin.txt	250 B	2026-Apr-12 13:11
B3S_35.18.bin.txt	221 B	2026-Apr-12 13:11
B3S_10.29.bin.txt	215 B	2026-Apr-12 13:11
B3S_30.07.bin.txt	210 B	2026-Apr-12 13:11
B3S_38.05.bin.txt	209 B	2026-Apr-12 13:11
B3S_37.07.bin.txt	203 B	2026-Apr-12 13:11
B3S_21.05.bin.txt	200 B	2026-Apr-12 13:11
B3S_38.11.bin.txt	197 B	2026-Apr-12 13:11
B3S_5.03.bin.txt	195 B	2026-Apr-12 13:11