Mediumgage has come out with just a little update to his homebrew PSP Filer. He says he fixed a few bugs that were going on with the original 5.1, so it should be running a little better now.
Fixes:
-Fixed a bug that the kernal3 Filer couldn’t run under some CFW version (that was caused in [...]

Same guys over at french site PSP Gen are working on there own custom firmware – 3.95 GEN. Its still being tested. And there is a major drawback, the PSOne emulator doesn’t work on the PSP Fat. Its possible its due to hardware or memory limitations on the PSP-1000’s. The only change I can see [...]

It seems to be that there is a CFW 3.93 though we previously said there wouldnt be a release from team M33 well we didnt lie. This firmware is made by a new developer Mathieulh. He states that had no hand in the making. This CFW has all the updates of 3.93, CFW, and a [...]

Posted on Alek’s website on April 19th, is a list of clarifications confirming there will be no M33 3.93 or 3.95 but there will be a 4.00. All people whining about being stuck at 3.93 official firmware will now be directed to pandora battery tutorials in the forums.

On another note, you lurkers should make accounts [...]

Intrested in having 3.93 firmware on you PSP but still want to have custom firmware, well hombrew devolper Yellow_Rain over at QJ.net has made a patch to add the new functions of 3.93 official firmware to 3.90 M33-2. The patch works for both PSP Slims and Phats. Know that this is not a new firmware [...]

Custom Firmware 3.90 M33-3 Released! DAX has released a small update to 3.90 M33. Improving the compatibility of the M33 no-umd driver. This can be downloaded and updated from your PSP, using the Network Update feature. Or use the download link below.
* March33 NO-UMD driver compatibility has increased to support games like Coded Arms, Patapon, [...]

Well it seems Dark Alex is well aware of the 3.93 official firmware release. Straight out of his blog he says in a short and clear message :
Looks like just as a formal update for titles; easily decrypted (just changed some table titles and so on); … anyway, don’t ask for M33 version… yet [...]

Dark~Alex has just released his new firmware: 3.90 M33-2! Here’s the changelog:
Changes:
– Improvements in plugins loading code:
* Fixed some problems with problematic cards due to filesystem not mounted.
* Now plugins should read the faster.
* Problem fixed with lines with spaces at the end.
- Added the rest of regions to the recovery option [...]

Dark_AleX has released an update to his 3.90 M33, 1.50 kernel add-on for Fat PSPs. This update now supports memory sticks greater than 4GB in size running the 1.5 kernel and also this fixes a display bug that affected TA-86 motherboards.

Installation: Copy the “150k_installer” folder to GAME and run the installer from the PSP XMB [...]

Dark_AleX has released the 1.5 kernel add-on for PSP fat units (PSP-1000’s) running 3.90 M33. Installation is just as before with the other 1.50 add-ons. You know the drill!
Installation / Instructions
- Copy 150k_addon to /PSP/GAME
- Get sony 1.50 update and copy it to the root with name “150.PBP”
- Run the program and done.

Dark_AleX has released PSP Custom Firmware 3.90 M33 to the world. This new firmware bring a major feature on board, Skype for the PSP. Finally its here. (Confirmed this works well, Skype calls sound just as good as on the PC)
Instructions
- Copy the UPDATE folder into /PSP/GAME/
- Get the 3.90 sony update from somewhere, and [...]

Now up to update number 5 as DarK_AleX and the team release 3.80 M33-5. This update is available by the network update feature or download manually below. This update for 3.80 M33 features a fix for custom CPU clock settings in games and the option to hide the PIC0.PNG and PIC1.PNG icons in the XMB [...]

Dark_AleX has released, 3.80 M33 Popsloader v2. This is just a big fix release which removes that annoying sleep mode bug. A must for users running popsloader. This only works on Custom Firmware 3.80 M33-3+

Download:  3.80 M33 Popsloader v2

Instructions: As usual, copy seplugins to memory stick, activate popsloader plugin in recovery, and put sony pops [...]

Dark_AleX has been very busy these days and now yet another release, as he releases Popsloader for 3.80 M33. This version adds compatibility with 3.80 M33. The Popsloader (PSX Emulator) plug-in the allows users to run any version of pops they wish. Since this is an optional plug-in, users need to manualy update this [...]

M33 Have released 3.80 M33-4, Another bugfix release. This is release comes just hours after 3.80 M33-3. So we give you the latest update 3.80 M33-4. You can either update this the manual way, or over the network update feature that was added in 3.80 M33.
Changelog:
- Fixed synchronization issue that plugins check code caused in [...]

M33 have a released a 1.50 addon, for Fat PSP’s that will enable 1.50 kernel support. This is for PSP-1000 systems only (aka – PSP Fat).
Instructions
- Copy the folder with the files inside to /PSP/GAME/
- Get the Sony official 1.50 firmware below and copy it to the ADDON folder and rename it “150.PBP”
- Run [...]

I have created an easy installer for those that seem to be having trouble installing 3.80 M33 (Not that’s its hard to install). But this makes things easier, Just download this installer and point it to your PSP Memory stick location PSP/GAME and It will install all the files need. Once done all you need [...]

Some hours after the release of 3.80 M33, Dark_AleX has released 3.80 M33-2 update. Fixed the CPU speed reporting and also includes a fix for those that reported a Dracula icon as the save icon for PSX games. You’ll need to have 3.80 M33 already installed to install this patch. Full changelog below:

Download: 3.80 M33-2 [...]