1.50 Kernel addon

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The 1.50 Kernel addon is a patch which could be installed for 3.71 M33 and up. It does allow Phat PSPs to run both 1.50 and 3.xx Kernel for homebrew compatibility.

Ever since the release of 3.71 M33, it has been decided that the main installer should not install the 1.50 kernel addon, like how it was in the OE firmwares and the early M33 firmwares. The addon, which is optional for Phat users, allows users to install the 1.50 kernel for homebrew at the expense of the Location Free Player and the Korean Font. However, the Location Free Player can be flashed back after the install. The addon will add the 'km' and 'podule' folders to flash0, where all of the 1.50 files will get flashed. Also, the installer has no checks so if there isn't any more space in flash0, the installer will end in an error. You will have an incomplete, or missing 1.50 subset.

On June 24, 2008, Alek made a blog posting saying that Team M33 has abandoned further development of the 1.50 kernel addon in future custom firmwares. He has advised that developers should update their homebrew to use the 3.xx and the new 4.xx kernels.

Slim PSPs are not able to use the 1.50 Kernel Addon patch. However, kxploit-formatted 1.50 homebrew can be launched while in TimeMachine's 1.50 + 3.40 Mix. Also, some 1.50 homebrew can also be launched with Noobz eLoader.

Installation

Note: The 1.50 kernel addon should be installed right after an upgrade to a newer custom firmware. This is to save on space needed for the install, and to prevent any errors that may occur in the future. In addition, it is advised that you delete the 'dic' folder from flash0 if you don't use an Asian Phat PSP. (This is to save about 2.5 MB of space)

Installing 1.50 Kernel addon

Requirements

How to Install the 1.50 Kernel Addon on M33/3.73 HX Firmwares

  • To install the 1.50 Kernel addon, you should be in 3.71 M33 or newer CFW. To find out your firmware version go to the the PSP setting menu and select "System Settings". Then select "System Information". It will display your PSP firmware version.
  • Since 3.71 M33 it has been an option if you want to install the 1.50 kernel, as some people prefer not to. Therefore this has to be done separately.
  • Download the 1.50 addon corresponding to the firmware you have and copy the folder '1.50k_addon' to PSP/GAME150.
  • Download the 1.50 Update file named 150.PBP and put it in the root of your MS.
  • Go on the XMB and press X.
  • It will flash it automatically, and you will have the 1.50 kernel addon.
  • After the application has exited, you can delete the extra files from your MS then the enjoy 1.50 Kernel based homebrew. Put 1.50 homebrew in the GAME150 folder in ms0/PSP/.

Installing 1.50 Kernel addon on 3.72 HX-1

  • You must have installed the firmware 3.71 M33 with the 3.71 kernel addon. If not downgrade using Despertar del Cementerio V3.
  • Download the 1.50 kernel addon file for 3.72 HX and open MS_ROOT. Then copy the PSP folder to the root of your memory stick.
  • Run the app, and press Square. Now the program will start to dump the addon. The dump is on ms0:/psp/game/update/km. Copy the km folder to your hd.
  • Install 3.72 HX. Later copy again the PSP folder that contain this app to the root of your memory stick.
  • Connect the USB (Flash0) and copy the backup done before in the root of the flash0. Run the app again and press X. It will copy the reboot150.prx and all will be done!

Taken from QJ

Note: This is only for Phat PSP's. (PSP-100x's only.) Do not try it on the slim.

  • All V2's of 1.50k addons have the previous updates in them so don't worry, just download the latest one.

Released Kernel Addons

1.50 Update File; Download: [2]

3.71 M33

Version 1

30 September 2007 Download: [3]

Allows 1.50 Kernel mode on CFW 3.71 M33

Version 2

2 October 2007 Download: [4]

Needed to be run on 3.71 M33-2, changelog: "When returning from sleep mode, 3.71 ipl was executed causing an immediate crash. Fixed."

3.72 HX-1

Release

7 November 2007 Download: [5]

Allows 1.50 Kernel mode on CFW 3.72 HX-1 only, not on 3.72 HX-2.

3.73 HX-1

Release

14 December 2007 Download: [6]

Allows 1.50 Kernel mode on 3.73 HX-1.

3.80 M33

Release

15 January 2008 Download: [7]

Allows 1.50 Kernel mode on CFW 3.80 M33-2

3.90 M33

Version 1

31 January 2008 Download: [8]

Allows 1.50 Kernel mode on CFW 3.90 M33

Version 2

9 February 2008 Download: [9]

- TA086: when being in 4th brightness level and recovering from sleep mode, the display was black. Fixed.

- Added support in the 1.50 kernel for memory sticks greater than 4 GB. Before, only the first 4 GB portion was recognized by the 1.5 kernel. Now, the theoretical limit is 4GB*512 = 2 Terabytes. ("only" 1 TB, if Sony were using signed variables).

4.01 M33

Release

29 June 2008 Download: [10]

Allows 1.50 Kernel mode on CFW 4.01 M33

5.00 M33

Release

18 October 2008 Download: [11]

Allows 1.50 Kernel mode on CFW 5.00 M33

- This version deletes "flash0:/dic/apotp.dic". Japanese input needs "apotp.dic". Delete other files and return "apotp.dic" to "flash0:/dic/" if you want to input Japanese.

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