(Yes, the video was made for a CDJ-2000 but the instructions are the same for a CDJ-900.)
2012-10-16 Firmware from 4.11 to 4.20 - Certain restricted features of CDJ-2000nexus when using with CDJ-2000/CDJ-900 become available: -- WAVEFORM ZOOM -- KEY indicators -- ACTIVE LOOP -- HOT CUE AUTO LOAD -- MY SETTINGS SAVE/LOAD
2012-07-05 Firmware from 4.01 to 4.11 - Fixed an issue that a particular USB3.0 does not work properly. (The transfer rate for a USB3.0 device is the same as USB2.0.) - Fixed an issue that static noise was occasionally generated with a particular MP3 file.
2012-01-16 Firmware from 4.05 to 4.10 - Improved sound quality and stability when playing with MASTER TEMPO on
2011-09-13 Firmware from 4.04 to 4.05 - Bug Fix - Loop audio would skip one frame during certain operation. - Corrected an issue which would cause the beat grid to become misaligned by 50ms when engaging the Master Tempo. - Corrected an issue where a click sound was generated on the audio playback for the specific MP3 files.
2011-06-01 Firmware from 4.0 to 4.04 - Bug Fix - When using certain types of HDD that have a fixed long wake time from sleep mode, the player would stop the playback (E-8302 PLAYER ERROR) when trying to access it across the PRO DJ LINK.
2011-03-31 Firmware from 3.2 to 4.0 - Expanded Pro DJ Link(LAN Link) function. - The new "UTILITY DUPLICATION" function allows instantaneous copying of player settings. - Support for the output of song BPM information to the "DJM-900nexus" DJ mixer. - Improved usability for the TAG LIST function to save them as playlists in rekordbox. - Solved the problem in USB3.0 media compatible with USB2.0. Transfer rate is same as USB2.0(480Mbps) when you use USB3.0 media. - Easy to recognize "ON AIR" Display. - Bug Fix - After adjusting LOOP OUT Setting by JOG Control, rarely can not use OUT ADJUST mode. - UNLOCK/LOCK function enabled for software. - Improved Sound Quality with Master Tempo. - Improved the fault where the LOOP-IN would not work if the entire CD was set for the loop. - Bug Fix - Removed noise generated in LOOP playback of specific CDs.
2010-11-30 Firmware from 3.1 to 3.2 - The Media Select Buttons (DISC, USB, LINK, etc.) will now blink when a track is loaded to clearly indicate the Media source. - A rare problem accessing Media Devices (USB, SD-Card.) has been resolved. - An error occurred after long play times which caused audio interuptions.
2010-07-12 Firmware from 3.0 to 3.1 - Enhanced connectivity with DJ software, allows the software to show the following information on the display of CDJ: Browsing music file, Cue/Loop Point, Waveform, Album Art. - Please note: you may need to adjust "HID SETTING" on utility setting up to DJ software you use. Please select [ADVANCED] on [HID SETTING], if your DJ software is Serato Scratch Live Ver2.1 or newer. If not please select [STANDARD] on [HID SETTING]. - Factory default of QUANTIZE changed from OFF to ON. - LOOP smoothing process was improved; the sound output become smoother between LOOP end and LOOP start or silence part and sound part. - Bug fixed / when "SLIP" mode was canceled, a beat mismatch occurred. - The start time of playing back a track is quicker when "AUTO CUE" is enabled. - Bug fixed / not able to set a loop when the track is shorter than 2s. - The brightness of the buttons around display are adjusted darker, to improve visibility (BROWSE, TAGLIST, INFO, LINK, USB, DISC). - Improve TEMPO slider operation and stability.
2010-05-18 Driver from 1.100 to 1.102 - Added a support of 24bit format in addition to current 16bit USB Audio I/F (Sound Card) format.
2010-03-18 Firmware from 2.03 to 3.0 - rekordbox™ Link and online export - Drag & drop playback with connected CDJs via LAN cable. - Quantize Loop improvement – From 0.5 audio frame to 1ms accuracy. - Version Number - Version number will be displayed after power on. - Caution Display - Caution will be displayed when linked with older CDJ firmware. - History registering time changed from 45 seconds to 60 seconds plus Dark Green colour indication. - 24 bit USB Audio - MAC OS X and ASIO4ALL Windows. - Repaired file number limitation (61 files) in YEAR browse mode. - Digital Output – lead out recording error causing external device to stop recording.
2010-01-28 Firmware from 2.02 to 2.03 - Performance improvement. - BPM accuracy improvement.
2010-01-08 Firmware from 2.0 to 2.02 - Enhances play ability and stability. - Enhances stability of link function.