From the changelog:

Install instructions:

- Copy the program to /PSP/GAME/UPDATE
- If you have 1.50 addon, make sure you have the kernel of game folder configured to 3.71, or the
program will not even start.

This update is totaly independent of the 3.71 M33 version installed (1, 2, or future ones),
and also independent of previous 1.50 kernel addon installed or not.


Changes:

- When returning from sleep mode, 3.71 ipl was executed causing an inmediate crash. Fixed.