MrTuto_Alek just gave word on IRC that a 1.50 kernel addon for 3.80 M33-2 now has been released by Team M33. Essentially, this lets you use 1.00/1.50 kernel homebrew on your new custom firmware like you can on earlier custom firmwares. Great news for PSP-1000 users indeed.
Requirements:
A PSP-1000 (fat) with 3.80 M33-2 custom firmware installed. Official firmware will not be able to install this.
Instructions:
- Copy the files in the release to a directory called anything BUT UPDATE
- Move the directory you created to /PSP/GAME/.
- Get the Sony 1.50 update and copy it to the root with name "150.PBP"
- Run the program and done.