CDJ-900NXS · firmware 1.31

Pionaarr Mods

Firmware mods for the Pioneer CDJ-900NXS. We took the player's firmware apart in an emulator and added what newer Pioneer players have: hot cues on the deck, beat jump, colour and 3-band waveforms, keys in Camelot colours and more.

Pick the mods you want in the builder. It patches the official 1.31 update in your browser and gives you a normal C900NXS.UPD to install like any update. The boot loader is never touched, so you can always go back to stock.

Open the builder The mods Docs

Stock CDJ-900NXS screen: blue waveform, red memory cues

Modded screen: 3-band waveform, coloured cues and hot cues, HOT KEYS, key in colour, BPM to two decimals

Stock 1.31 Pionaarr Mods

Same track, same spot, in the emulator. Right: every mod, the ones in testing too: 3-band waveform, the next cue's name, hot cues, the key in colour, the countdown clear of the phase meter.

mods in the builder, plus more in testing

A–C

hot cues on the BEAT DIVIDE keys

0 bytes

changed in the boot loader

1 file

built in your browser, nothing uploaded

The mods

Two are by arnoldasr, the rest are Pionaarr mods.

stable experimental in testing

Advanced waveforms

stable

Pionaarr mod · advanced_waveforms

3-band waveform: blue lows, amber mids, white highs — 3-band · in testing

rekordbox's RGB colours on the big waveform, a red-to-white overview. 1.0.1 takes colour data that is a little short too. In testing: UTILITY › WAVEFORM with BLUE, RGB and 3-band (lows, mids, highs).

Cue colours

stable

Pionaarr mod · cuecolours

Overview with coloured memory cues and hot cue boxes A to F

Memory cues in their rekordbox colours, hot cues A–H as lettered boxes. 1.0.1 keeps a hot cue's colour when it has a comment.

Hot cue keys

experimental

Pionaarr mod · hotcuekeys

QUANTIZE short: the top three BEAT DIVIDE keys become hot cues A–C. Hold an empty key to set one.

Hot cue guide →

Beat jump

experimental

Pionaarr mod · beatjump

TRACK SEARCH ◀◀ ▶▶ jumps 1, 2, 4 or 8 beats, gapless and in phase.

Key notation

experimental

Pionaarr mod · keynotation

Every key in Camelot, Open Key or classic, in its Camelot wheel colour.

Cue names

in testing

Pionaarr mod · cuenames

Title bar with the next cue: C Break in green

The comment you give a cue in rekordbox ("Drop") in the title bar, in the cue's colour: always the next named cue ahead.

Played tracks

in testing

Pionaarr mod · played

Track list: [1] Lunatica in green, loaded on player 1

Tracks loaded tonight turn green in BROWSE. Over Pro DJ Link modded players share theirs, and a track on another deck right now shows [1] or [1][3].

End warning

in testing

Pionaarr mod · endwarn

In the last 30 seconds the bar under the overview blinks red instead of white.

Quick search

in testing

Pionaarr mod · quicksearch

BROWSE held opens SEARCH; BROWSE twice goes to the list the playing track came from.

USB auto load

in testing

Pionaarr mod · usbautoload

MY SETTINGS on a stick are loaded the moment the player finds them. UTILITY › USB AUTO LOAD.

Extended BPM

stable

by arnoldasr · extended_bpm

The BPM to two decimals.

Phase meter

stable

by arnoldasr · additions by us · phasemeter

Two-line phase meter, the bar countdown beside it

Two lines instead of four boxes: master and this deck. In testing: UTILITY › PHASE METER REVERSE, and the bar countdown moved clear of the lines.

LED animation

stable

Pionaarr mod · ledsaver

With the screen saver on, the button LEDs and jog rings play a loop.

Boot text

stable

Pionaarr mod · credit

The boot screen says Pionaarr Mods 1.0.

in testing means built and working in the emulator, not in the builder yet. Still to come: Upcoming.

Build it in your browser

The builder takes the official 1.31 update and adds the mods you tick, on your computer. Only the main application changes; the boot loader and recovery are copied byte for byte and checked.

Open the builder

Prefer the command line? The Python patcher is in the docs.