Installing the 1.50 Kernel compatibility (FOR FAT PSPs ONLY)
Since the Slim PSP is not compatible with 1.50 Kernel the main CFW installer will not install 1.50 Kernel anymore. Nevertheless a 1.50 Kernel addon for 5.00 M33 is available to add this capability (but for Fat PSPs ONLY). Therefore if you have a Slim PSP you must skip this section.
Note: This update is totally independent of the 5.00 M33 version installed (1, 2, or future ones).
1.- Download the 1.50 Kernel addon for 5.00 M33.
2.- Uncompress the contents of the “150k_addon500.rar” file into a handy location your HD. Browse the uncompressed contents in your HD, and you will see a folder called “150k_installer500” containing four files (EBOOT.PBP, ipl_update.prx, libpsardumper.prx and pspdecrypt.prx).
3.- Connect your PSP to your PC via USB cable and enable the USB Mode on your PSP.
4.-Copy the folder called “150k_installer500” and all its contents to ms0:/PSP/GAME/
5.- Download the 1.50 Official SONY Update File from any of the download links above. Unzip the 1.50 update to a temporary folder. Rename the unzipped 1.50 EBOOT.PBP file to 150.PBP. Then copy it into the root of your Memory Stick.
6.- Disable the USB Mode safely and disconnect the PSP from the PC.
7.- In the PSP’s XMB Menu, goto “Game” -> “Memory Stick”
8.- Highlight the 1.50 Kernel Installer for 5.00 M33 and press X button to execute the program.
9.- The updater will remind you that once installed you will lose flash0:/dic/apotp.dic. No need to worry as this file has no clear function. Press X to agree, and the Update will be installed.
10.- Your fat PSP will now be able to execute homebrew applications based in 1.50 Kernel. (Remember that by default all 1.50 Kernel Homebrew should be installed in the :/PSP/GAME150/ folder).
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Changes:
- 4.01 to 5.00
- Bug fix: when changing speed in xmb, and the psp turned the brightness to 0 automatically the speed was rested to 222 again.
Note to pspstates plugin users: this plugin won’t work in this firmware due to it being made
specifically for 4.01. Running it in 5.00 M33 can cause problems, wait until an update of plugin.