Builder
Build your update
Upload the official CDJ-900NXS 1.31 update, tick the mods and download your C900NXS.UPD. Everything runs in your browser: the file never leaves your computer.
1
The official update
Pioneer DJ's C900NXS.UPD for firmware 1.31. The builder checks its SHA-256 and refuses any other file.
2
The mods
Ticking a mod also ticks what it needs; unticking one unticks what needs it. Tick none for the stock firmware (relabelled so the player takes it).
3
Before you build
Unofficial firmware. Flashing modified firmware can leave your player unusable. The boot loader and the recovery stay untouched, so an official update can still be run, but there is no guarantee.
4
Build
Download C900NXS.UPD
What was checked
Copy C900NXS.UPD to the root of a FAT32 USB stick and run the update on the player as for an official one. The file is labelled 1.32 so the player installs it; the player still reports 1.31.