All right people, dark-alex has done it again and released 3.90 M33 for the PSP. As it seems, it did not take him long to crank out this update. You can download it here or use network update on a 3.80 M33 enabled PSP. The full changelog and readme is as follows below:


3.90 M33

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Requirements:

* Installation requires a PSP with 3.52 M33-3 or higher.

Instructions

* Copy the UPDATE folder into /PSP/GAME/
* Get the 3.90 sony update from somewhere, and put it in same folder, with name "390.PBP". Alternatively, you can let the installer to download for you via wifi.
* Run it, the update will be done by Sony updater. At the end when you are asked to reboot the
* PSP pressing X or O, do it.


Changes:

* 3.80 -> 3.90
* March33 NO UMD: fixed (yet another) bug related with exiting with home. (infinite semaphore wait)


Changes in updater:

* The degeneration check and correction of IDS keys happens too in 3.71 now.
* Added code to download 3.90 PBP from 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 "Veryfing 390.PBP". If the 390.PBP is being downloaded bia wifi, press those buttons at the end of download until you see the previous sentence.

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Dark_Alex has made a 1.50 kernel add-on for custom firmware 3.90 M33, usable for series 1000 PSPs (the big, original ones) making 1.50 homebrew usable again. Readme and instructions below:


150 kernel addon for 3.90 M33 (psp phat only)

* 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.


3.90 M33

1.5 kernel addon(fat psps only)


via dcemu

great, but after the update i try to play gran turismo 2 disc2(psx) and freezes when i need to choose transmission and before with version 3.80M33 5 was working fine

hey thanks for lettin me no, now beats will work properly

OMG!

I'm still in awe at the Network Update option ... it even D/L's the official 3.90 for me!

yeah thats how I did it too TelcoLou didnt even need to touch my PC

i just dnt c da point in upgarding ryte now ill stick to 3.8 for now

i luvs my 3.52m33