There are 2 generations of PSX DESRs: DESR-7000/DESR-5000/DESR-7100/DESR-5100 DESR-7500/DESR-5500/DESR-7700/DESR-5700 First generation. After researches I found that there can be at least 6 different firmware version. Firmware can be divided in three types: factory firmware, disc distribution, network distribution. Version 1.06 - factory firmware. Internal version number for all packages - 0.1. DESR-7000/DESR-5000 was released with this firmware on board. Internal name for factory release: Code: 1.06 Version 1.10 - was distributed with update disc and over network. Never seen 1.10 as factory firmware. Internal number for all packages - 0.2. Has 2 internal names: network release Code: 1.10 Network 0 disc release Code: 1.10 Disc 0 Spoiler: Changelog ■ Improved dubbing speed from HDD to DVD up to 24x (In DVD-R 4x speed compatible media SLP mode) ■ Support for raw images in TIFF format (DCF standard) (Import via Memory Stick or USB connection (still only Sony digital camera)) ■ Support of MP3 music format (Play from CD-R, import MP3 file to HDD) ■ Re-extension setting at the time of extension recording is possible ※ When you set the extended recording in the program reservation, after entering the recording extension time, you will be able to extend again. ■ Rewind function (It is possible to fast forward / backward to the scene around 15 seconds during video playback) ■ Correspondence of 30 times speed of fast forward, fast reverse (In addition to 2 times, 10 times, 120 times, it became possible to search 30 times) ■ Video title sort function (Sort the programs by date, title, genre, watched / not watched etc.) ■ USB keyboard support at the time of title input ("Playstation 2" compatible keyboard) ■ Other software fixes ・ Fixed that dubbing can not be performed by the externally connected device. ・ Correction of the point that the channel setting of Just Clock changes to the initial value when performing automatic channel setting. ・ When the optical digital out (SPDIF) is connected, if there is a pause when editing video recorded on the HDD, correction of a point where noise appears rarely Version 1.20 - was distributed with update disc and over network. Never seen 1.20 as factory firmware. Internal number for all packages except PSML1 package - 0.2. PSML1 package version (added new package) - 0.0. PSML - this is BB Navigator (online channels) for PSX DVR. Firmware has the same internal name for network and disc releases: Code: 1.20 Network 20040326_1900_R Spoiler: Changelog ■ Support for recording and playback of DVD y-03 r0.75 + r0.00 y + 00RW (VR format) ■ Added reproduction, import of moving image format from Sony digital still camera "Cyber-shot" (Import from Memory Stick or USB connection) ■ Supports playback and import of GIF format (DCF standard) still images from Sony digital still camera "Cyber Shot" (Import from Memory Stick or USB connection, clip motion only) ■ Support for quick play (1.3 times speed) ■ Support for bilingual audio recording ■ Support of 30x speed of fast forward and fast reverse of commercial DVD software ■ Added reproduction, import photo from CD-R (JPEG, TIFF, GIF, MPEG1 format) ■ The number of MP3 recognizable songs on CD-R has been improved to 99 songs / folders ■ Reservation revision on program schedule ■ Other software fixes -Correction of the point which stops on the way of slide show playback. Version 1.30 - factory firmware. There is no disc update for this version. Never seen network update for this version. Internal version number for almost all packages - 0.4. Added some new packages (psml package updated) which has version 0.1: PSML1, XHKB, PVRREENCO, XSCROLLBAR, XSCROLLLIST. DESR-7100/DESR-5100 was released with this firmware on board. Internal name for factory release: Code: 1.30 UpdateDisc 20040611_1100_B(DVRP:0207)//1.30 Production 20040611_1100_B(DVRP:0207) Interesting that it is mixed with Update Disc label while there is no public Update disc for this version. Spoiler: Changelog ■ Graphical DVD title menu creation function (Selectable from 50 types) ■ Add-on dubbing function to DVD (Dubbing to DVD-RW (VR mode), DVD + RW) ■ Recording mode change function (Automatic adjustment function of recording mode when dubbing from HDD to DVD) (Recording mode of content on HDD can be changed) ■ Chapter editing function (When editing HDD recording title) ■ A function to record the edited result as original when dubbed to DVD-RW (VR mode) ■ A function to dub titles recorded on HDD with primary + secondary audio to DVD-RW (Video mode) ■ Title name change function at the time of recording reservation ■ Still image added to Visualizer during music playback ■ Design change of icon, background image ■ "PlayStation BB" compatible (Page view function: Various channel browsing function only) ■ Software modification -Fixed the problem that the slide show of large still images stops. Version 1.31 - was distributed with update disc, over network and also as factory firmware. Internal number for package called "Version_0" - 0.6 .Some packages has internal version - 0.2: PSML1, XHKB, PVRREENCO, XSCROLLBAR, XSCROLLLIST. Internal number for all other packages - 0.5. Firmware internal names: network Code: 1.31 Network 20040720_1313_B update disc Code: 1.31 UpdateDisc20040720_1313_B factory Code: 1.31 Production 20040720_1313_B Spoiler: Changelog ■ Reduced the time to return to the home menu from “PlayStation BB”. ■ Improved the display of some content on “PlayStation BB”. ■ The screen transition on the home menu screen has been made smoother. Regarding modern DESR series - there was only 2 versions: Version 2.06 - was distributed as factory firmware. Internal number for package called "Version_0" - 0.64 . I found this firmware on DESR-5500 and DESR-5700. Firmware internal name Code: 2.06 Disk Release Version 2.10. I didn't touch that version. Maybe network release, maybe factory release. May be found on DESR-7700. Firmware internal name Code: 2.10 Disk Release Version 2.11 - was distributed as update disk. Internal number for package called "Version_0" - 0.105 Firmware internal name Code: 2.11 Disk Release
If someone owns DESR-x700 with firmware version 2.10 or DESR-5100 with firmware version 1.30 and are willing to share information for research purposes please contact me.