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[[Image:ICO.JPG|thumb|right|M33 Custom Firmwares Logo]] M33 firmwares are custom firmwares developed by Dark AleX. They are based on [[Official_Firmware|Sony's firmwares]] starting from 3.51 and above. Earlier custom firmwares by AleX were known as [[OE_Firmwares|OE (Open Edition) firmwares]] and [[SE_Firmwares|SE firmwares]]. Except for the different name, M33 firmwares follow the same concept as OE/SE firmwares; i.e. Removing restrictions from Original firmwares, full homebrew support and lots of customization possibilities. M33 firmwares 3.60 and above can be installed on Slim PSPs too. These are the new features introduced in M33 firmwares: * Video ISO loader * The new M33 NoUMD Driver and support for Sony's NP9660 NoUMD Driver * A revised [[Recovery Menu]] with more features added in * [[VshMenu]], a small in-[[XMB]] plugin to change settings normally accessable only in the [[Recovery Menu]]. ==Development== After Dark_AleX supposedly retired from the PSP scene, he and a few other sceners continued, under the pseudonym of Team M33 developing [[Custom Firmware]] with the tag of M33 (rather than OE/SE). On July 14, 2007, the first release rolled out. Almost everything resembled some part of OE including the installer. After 7 updates to the base firmware, bugs were fixed, and more features were added in to expand on the firmware. This remained the basis for most of the future releases. ==Features== All of the 3.40 OE features still remain on the M33 Firmwares. However, the only feature that lacks past 3.52 M33 is the autoboot program that allows programs to be run from a coldboot. ===[[ISO]] Play=== ISO play still works, with the ability to the OE, M33, and Sony NP9660 NoUMD Drivers to play backed up games. Compatibility and speeds have been improved in the newer M33 and Sony NP9660 Drivers. ===[[Recovery]]=== All aspects of recovery mode works across both Phat and Slim PSPs except for the autoboot, and recovery to 1.50 on Slims. PSP Slim & Lite users, however, have the option of utilizing a special USB Charge plugin, allowing the user to charge their PSP via the USB Cable without activating USB Mode. ===PSOne Play=== PSOne games can be played with better compatibility across both the Phat and Slim PSPs. Multi-disc games can also be played as long as they are converted properly using utilities like PopStation MD. ===[[VshMenu]]=== The VshMenu, a new addition to the M33 firmwares, allows users to quickly over/underclock their PSPs, change the ISO loader plugin used for backups, change the XMB USB Device (Memstick, Flash0, Flash1, etc), mount video ISOs, and reset the device. ==[[Releases]]== For a guide of how to install custom firmwares safely visit: [[Installing Custom Firmware]]. For a full list of Dark AleX's releases (including OE/SE firmwares), visit: [[Dark-AleX Releases]] ==3.51 M33== ===Release=== '''14 July 2007''' [http://exophase.com/files/psp/m33rel.rar Download] All of the 3.xx OE features remained, except that it used the 3.51 firmware (which added 3.50 features, for those still on 3.40 OE), which was actually the Illuminati patch. ===3.51 M33-WLANfix=== '''14 July 2007''' [http://exophase.com/files/psp/m33wlanfix.rar Download] Fixed WLAN. ===3.51 M33-3=== '''17 July 2007''' [http://exophase.com/files/psp/No-Umd-M33.zip Download] It added the NO-UMD modes, which added M33's own ISO loader, and Dark_Alex's ISO loader from the OE firmware. ===3.51 M33-4=== '''18 July 2007''' [http://exophase.com/files/psp/M33-4.zip Download] This fixed bugs in the NO-UMD modes that were released the day before. Also, this allowed plugins to be used in homebrew that were in the GAME150 folder. ===3.51 M33-5=== '''18 July 2007''' [http://exophase.com/files/psp/M33_5.zip Download] This update fixed another two bugs with the NO-UMD modes. ===3.51 M33-6=== '''19 July 2007''' [http://exophase.com/files/psp/M33-6.zip Download] This update added in Sony's NP9660 ISO loader that was discovered on firmwares past 3.51. ===3.51 M33-7=== '''21 July 2007''' [http://exophase.com/files/psp/M33-7.zip Download] The last update, 3.51 M33-7 fixed several bugs, and added improvements to different features. M33's ISO loader speeds were improved, brightness issues were fixed throughout the system, (with the 1.50 kernel brightness added) the WLAN fix was implemented in a different way, and an option was added in recovery for those still experiencing WLAN issues. Before any updates were released to the 3.51 M33 firmware, a WLAN fix was added for those experiencing WLAN issues with their system. With the initial release optional, it later was added in the later updates. ==3.52 M33== ===Release=== '''25 July 2007''' [http://exophase.com/files/psp/3.52M33.zip Download] This included all the features of 3.51 M33, and it moved up to the 3.52 firmware. The initial release fixed a bug with the Go!Cam, GPS, and the sceKernelLoadExecVSH working properly while in a game. Also, the compatibility of the NO-UMD mode was improved to allow games downloaded from the [[PlayStation_Network_titles|PSN]] to be played properly. ===3.52 M33-2=== '''30 July 2007''' [http://exophase.com/files/psp/M33UPDATE2.zip Download] This fixed the compatibility issue with PSX games in IRSHELL via usbhostfs and nethostfs. Also, the document.dat from PSX games didn't need the same game ID as the game itself for it to work. In recovery, the "use isofs with UMD inserted" was stripped as it wasn't useful anymore. Speeds of 20 MHz and 100 MHz were been added as option for underclocking the system. Also, while USB Mode is activated, the ability to turn off the PSP is disabled completely. (Therefore, the only way would be a hard reset by taking out the battery) The issue of Chinese and Korean fonts crashing the XMB and homebrew was fixed. However, the Korean font has to be added from a 3.52 dump. Also, popsloader was added, and it allowed POPS to be loaded from 3.40, 3.51, and 3.52. However, the necessary files have to be dumped from the firmwares, and moved to the memory stick. ===3.52 M33-3=== '''19 August 2007''' [http://exophase.com/files/psp/m33-333.zip Download] In recovery, 75 MHz and 133 MHz were added as speeds for underclocking. USB to flash2, and flash3 was been added. Under the config, an option to change the device that will be mounted in the XMB under USB Mode was added. This could be changed between Memory Stick, flash0-3, and the UMD Disc. In the XMB menu, a new vshMenu was added. This allowed CPU settings, the ISO loader settings, as well as the XMB USB Mode to be changed on-the-fly. However, due to the fact that it is brought up by pressing the HOME button, other XMB plugins using that key will not work. Therefore, an option to turn off the vshMenu was added in recovery. The final change to the XMB was the ability to mount and play UMD ISO Videos. Games and Videos will appear under GAME. In [[Popsloader]], support for 3.30 POPS was added. ===3.52 M33-4=== '''21 August 2007''' [http://exophase.com/files/psp/M33-1234.zip Download] This was the last update to 3.52 M33. This fixed the CRC error while flashing in the XMB over USB. Also, the 75 and 133 MHz speeds were added to the vshMenu since it was forgotten by the team. Support for 3.10 and 3.11 POPS were added in. ===The Bricking Issues=== A few people had been editing Team M33's custom firmwares to remove credits. With the release of 3.52 M33-4, Team M33 added extra protection which verified the authenticity of the downloaded files. If the verification failed (i.e. Files had been edited/modified in any way), the updater would brick the PSP. Soon after this, members from N00bz, M33 and Team C+D came together to release the [[Pandora|Pandora Battery]], which was the culmination of years of research. ==3.60 M33== ===Release=== '''10 September 2007''' [http://exophase.com/files/psp/360M33_for_Slim.zip Download] 3.60 M33 was released 5 days after the inital Slim release. Installation was different on a Slim since it lacked support of the 1.50 kernel. However, installation was possible with the use of a modified Pandora Battery install. Instead of installing 1.50, it just flashed the M33 files. Due to this method, it proved effective only on Slims that were on 3.60. If it was on any other firmware, it didn't work. Also, 3.60 was a Slim-only firmware, and wouldn't work on a Phat. If attempted, the system would either brick or the custom firmware would become partial, or corrupted. 3.60 M33 contained all of the features of 3.52 M33, as well as the Slim-only features such as the Cookies theme, TV output, etc. ==3.71 M33== ===Release=== '''23 September 2007''' [http://exophase.com/files/psp/release.rar Download] Within days of the 3.60 release, 3.70 was released for both Phats, and Slims, and 3.71 was a quick fix. As stated before, the Pandora install of 3.60 M33, was useless on 3.71, and therefore, a new method of install had to be created. Using the same Pandora Battery, Dark_Alex developed a method that installed a fresh copy of 3.71 as well as the M33 files, or just 3.71 if the user chose to. For those on 3.52 M33 and Slims already on 3.60 M33, they were able to update normally without the use of Pandora Battery. On 3.71 M33, the vshMenu was remapped to SELECT since the HOME key was in use more since 3.71. On the Slim, the UMD Cache feature was disabled only if the user launched homebrew. This was to allow the memory need for homebrew games which before, wasn't available due to the UMD Cache taking it up. Also, both on the Phat and Slim, booted from the 3.xx ipl instead of the 1.50 ipl. The installer from 3.71 M33 onwards used a modified version of the Sony installer. Due to this, an IDStorage degeneration check was put on the installer. However, this checked mainly for key 5 on TA-082/086 motherboards, and degeneration on other motherboards may or may not be picked up by the installer. However, there are many different methods of resolving this issue. Also, since 3.71 M33, the installer doesn't install the 1.50 kernel anymore. However, the 1.50 kernel addon was released for Phats, and it installed the 1.50 kernel at the expense of the Location Free Player, and the Korean font. The Location Free Player was still available if the specific files were flashed after the installation. However, with each version of the 1.50 kernel addon, the same files would be deleted before install. Therefore, the files had to be reflashed again. ===3.71 M33-2=== '''2 October 2007''' [http://www.dark-alex.org/M33UPDATE2.rar Download] A bug that corrupted flash0 while writing over USB was fixed. However, another bug came and caused the same problem. On Slims, they were allowed to charge over USB, as long as the option was set in recovery. Charging worked anywhere as long as the PSP was on. The vshMenu was disabled while using the on-screen keyboard. (OSK) This prevented the loss of the SELECT button while using it. Also, vsh plugins were not activated in recovery, because it led to pseudo-bricks. ===3.71 M33-3=== '''8 November 2007''' [http://exophase.com/files/psp/371m33-3.zip Download] On the same flash0 corruption bug that was fixed on 3.71 M33-2 was fixed again with this release. With M33's ISO loader, two bugs were fixed. Also, the vshMenu was now displayed properly while using TV-Output on Slims. Also, Popsloader for 3.71 M33 was released, and it did require 3.71 M33-3 and the several files from the different firmwares in order to work. ===3.71 M33-4=== '''12 December 2007''' [http://exophase.com/files/psp/m33update4.zip Download] This allowed multi-disc PSX games to be played. Also, multi-disc games bought from the PSN store would work again. Also, bugfixes with the 3.72 POPS has been fixed. ==3.80 M33== ===Release=== '''14 January 2008''' [http://exophase.com/files/psp/380_m33.rar Download] This update adds a new network update feature which, when enabled, will check for M33 firmware updates. When the feature is disabled through the recovery menu, the network update feature operates as it normally does checking for Sony firmware updates. ===3.80 M33-2=== '''14 January 2008''' [http://exophase.com/files/psp/m33update2.rar Download] Team M33 also released update 2 on the same day which fixes with scePowerGetClockFrequencyInt not being resolved properly. Update 2 also fixes a problem with the way PSX eboot icons are displayed if they are 80x80 pixels. a 1.50 Kernel update was also released. ===3.80 M33-3=== '''16 January 2008''' [http://exophase.com/files/psp/380m33_3.rar Download] It fixed a synchronization issue that plugins check code cause in PSN NP9660 original games. Also added were a couple libs to the nids resolver and some internal changes required for the new version of the popsloader which was released on that same day. ===3.80 M33-4=== '''16 January 2008''' [http://exophase.com/files/psp/380m33_4.rar Download] Update 4 was released on the same day to address a quick bugfix, galaxy.prx was updated because it was causing a problem with slow memory sticks. ===3.80 M33-5=== '''20 January 2008''' [http://exophase.com/files/psp/380m33update5.rar Download] Fixed custom CPU clock not working in games. CPU clock has never (in any SE/OE/M33) been set at all in games that restarted using sceKernelLoadExec to use a subgame or reload themselves, after said restart happened (e.g. Castlevania). Fixed. Added setting to recovery to hide PIC0.PNG and PIC1.PNG in the XMB game menu. By default, this setting is turned off. This feature, when turned on, results in faster browsing speeds in the XMB Game menu. This setting only applies to any kind of apps/games (pbp, iso) that load from MS, but not to UMD's. ==== 8 GB stick support for 3.80 M33 Popsloader ==== '''11 February 2008''' [http://dl.qj.net/General-Apps/pg/12/fid/15910/catid/151 Download] Dark_Alex unofficially released a patch for users of 3.80 M33 Popsloader that allowed them to use 8 GB memory sticks along with the popsloader. However, with this patch, the system will not boot without a memory stick, and supposedly, the unit will also brick without the memory stick inserted. ==3.90 M33== ===Release=== '''31 January 2008''' [http://exophase.com/files/psp/390m33.rar Download] Uses new FW 3.90 kernel, and March33 NO UMD fixed (yet another bug related with exiting with home, infinite semaphore wait). There were also a few changes in the Updater. The degeneration check and correction of IDS keys happens in 3.71 too now. Added code to download 3.90 PBP from the net via WiFi. Note that his code is not yet 100% stable, it may crash when selecting AP. In that case, reinit the installer. L+triangle has been restored as method to bypass battery. If you already have 390.PBP keep those buttons pressed until you see "Verifying 390.PBP". If the 390.PBP is being downloaded via WiFi, press those buttons at the end of download until you see the previous sentence. A FW1.50 addon was also released the same day. ===3.90 M33-2=== '''13 February 2008''' [http://exophase.com/files/psp/390m33_2.rar Download] Improvements in plugin loading code. Added rest of the regions to fake region. (Korea, UK, East etc.) The 3.90 eboot downloading code is now more stable. On Slim: Added patches in nand ipl to allow [[Booster's Multi-IPL loader]] and TimeMachine ipl-loader to boot from nand. Note: only 3.90 M33-2 and higher can be booted from nand in slim with those ipl loaders, not official Sony firmwares or previous versions of M33. This also allows a PSP Slim to boot to the XMB with a Pandora Battery inserted. ===3.90 M33-3=== '''31 March 2008''' [http://exophase.com/files/psp/390m33_3.rar Download] March33 no-umd driver compatibiilty has increased to support games like Coded Arms, Patapon, Harvest Moon Innocent Life and probably others affected by same errors. ==4.01 M33== ''If you have came across this from a 4.00 M33 link, please note that there is no 4.00 M33 as 4.01 M33 was released.'' ===Release=== '''28 June 2008''' [http://forums.exophase.com/showthread.php?t=7668 Download] Instead of Dark_Alex going ahead and release 4.00 M33, Sony released OFW [[4.01]]. Therefore, Dark_Alex ended up releasing 4.01 M33 a few days later. New features included in this version is the usual features that 4.01 bring as well as the ability to translate the recovery menu configurable by a file that can be left on the memory stick or in flash1. Also, what would have been the GAME401 folder is now GAME4xx to acquaint for the future releases of any 4.xx firmware, and also previous 3.xx kernel homebrew. In the Camera mode from the XMB, the vshMenu was disabled since it interfered with the ability to change camera modes. ===4.01 M33-2=== '''29 June 2008''' [http://forums.exophase.com/showthread.php?t=7675 Download] Released the day after the 4.01 M33 release, this fixed scePowerGetCpuClockFrequency that didn't allow for plugins and other homebrew to read the clock speed of the PSP correctly that first appeared in 3.80 M33-1. Also, bugs in recovery were fixed and the Spanish translation file was updated due to typos. ==5.00 M33== ===Release=== '''17 October 2008''' [http://www.dark-alex.org/forum/viewtopic.php?f=44&t=1521&p=15012#p15012 Download] Released a couple days after [[5.00]], Team M33 released 5.00 M33. Besides the new features brought between 4.01, and 5.00, a bug in the vshMenu and the XMB where the clock speed would return to its default of 222 MHz has been fixed. Upon discovery, it was found that there was a bug with PSX games where the system now allowed 24 bit icons instead of the previous 32 bit ones. Due to this, custom made PSX icons no longer worked. Initially, Dark_Alex announced that there would be no fix for this issue. However, more PSX problems evolved including a black screen appearing for any PSX game. All of these fixes will be included with an updated popsloader for 5.00 M33-2. (In which will be released in order to use the new popsloader) ===PSX Issues=== When the problems with the PSX were discovered, Dark_Alex released a fixed version of the 'popcorn.prx' file in which was causing the problems. On October 21, Dark_Alex released a new updated version that fixed all the issues this time around. However, all of the fixes and a new popsloader will be packaged with 5.00 M33-2. ===5.00 M33-2=== '''22 October 2008''' [http://www.dark-alex.org/forum/viewtopic.php?f=44&t=1844 Download] This update fixes all the problems that were found with PSX games including the corruption of the RAM for PSX games. sctrlKernelSetInit* functions, and the M33 Network Update were also fixed. Two feature changes were implemented. The first is the possibility of loading the PSP's version information from flash0 via a .txt file. With this feature, it allows a user to dump a 'version.txt' from a specific firmware eboot, flash it to flash0, and be able to access things that would normally be restricted by the firmware. For example, a user could flash a 'version.txt' file from 4.01, flash it to a 5.00 M33 PSP, and be able to run the [[4.05]] or [[5.01]] update again as long as the option is enabled in recovery. The next feature change is a change in the file format for plugins. 5.00 M33-2 eliminates the use of the 'conf.bin' file (the config file for plugins), and the 'vsh.txt', 'game.txt' and the 'pops.txt' file now have a 0 or 1 after each line indicating whether or not the plugin is enabled or disabled. (This causes plugins to no longer work in Time Machine firmwares unless 'vsh.txt', 'game.txt', and 'pops.txt' are edited.) In Advanced > Advanced Configuration, the option to completely enable or disable XMB, GAME, or POPs plugins can be configured. Upon entering the Plugins menu of recovery, all files will be converted to the 5.00 M33-2 format. ===5.00 M33-3=== '''23 October 2008''' [http://www.dark-alex.org/forum/viewtopic.php?f=44&t=1893 Download] Another update was released: 5.00 M33-3. This update fixes a big bug in M33-2 that made some homebrew and games not to work. Also, PSN version check is now automatically bypassed without need of touching any setting. ===5.00 M33-4=== '''5 December 2008''' [http://forums.exophase.com/showthread.php?t=9709 Download] Update 5.00 M33-4 changed the following: Speed selected for umd/iso was not properly locked in some new games that used scePower_EBD177D6 instead of scePowerSetClockFrequency to change speed. UMD/ISO speed settings now apply to PSN games too. Fixed libupdown.prx connecting to dark-alex.org instead of sony when npsignin_plugin checks for a new version and m33 update is enabled. ISO file descriptor was not closed in driver deletion. Added a shutdown command to vshmenu. ===5.00 M33-5=== A setting has been added to recovery, that, when enabled it may increase memory stick reading speed. (only on the psp, not in the pc). By default it is disabled. If you installed 3.71 fatmsmod, do not use this setting, as its perfomance with 3.71 driver has not been tested. Instead, reinstall 5.00 m33-4 using dc8 and update to 5.00 m33-5. The included file fat_comparison.html contains a comparison of perfomance between the 5.00 fat driver, the 3.71 one, and the 5.00 one with the speed up hack during the read of an iso. The test was done on the game Valkyrie Profile in cso format in march33 mode. Other games, modes and applications different than iso reading showed similar results. ===5.00 M33-6=== '''20 January 2009''' [http://forums.exophase.com/attachment.php?attachmentid=7904&d=1232459389 Download] Fixed a bug that made PSPs unbootable without a memory stick or with a bad one.

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