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/K3/

File Name ↓	File Size ↓	Date ↓
Parent directory/	-	-
K3_5.97.bin.txt	231 B	2026-Apr-12 13:11
K3_5.97.bin	55.0 KiB	2026-Apr-12 13:11
K3_5.04.bin.txt	195 B	2026-Apr-12 13:11
K3_5.04.bin	260.6 KiB	2026-Apr-12 13:11
K3_5.03.bin.txt	195 B	2026-Apr-12 13:11
K3_5.03.bin	311.6 KiB	2026-Apr-12 13:11
K3_4.23.bin.txt	243 B	2026-Apr-12 13:11
K3_4.23.bin	261.4 KiB	2026-Apr-12 13:11
K3_4.20.bin.txt	195 B	2026-Apr-12 13:11
K3_4.20.bin	314.2 KiB	2026-Apr-12 13:11
K3_4.10.bin.txt	195 B	2026-Apr-12 13:11
K3_4.10.bin	256.2 KiB	2026-Apr-12 13:11
K3_3.24.bin.txt	243 B	2026-Apr-12 13:11
K3_3.24.bin	261.8 KiB	2026-Apr-12 13:11
K3_3.23.bin.txt	195 B	2026-Apr-12 13:11
K3_3.23.bin	315.5 KiB	2026-Apr-12 13:11
K3_3.18.bin.txt	195 B	2026-Apr-12 13:11
K3_3.18.bin	256.6 KiB	2026-Apr-12 13:11
K3_2.17.bin.txt	195 B	2026-Apr-12 13:11
K3_2.17.bin	241.3 KiB	2026-Apr-12 13:11