help with irshell again

i have firmware version 3.71 M33-4 with the 1.50 kearnel addon. and when i go to run irshell 3.81 it says wrong firmware version, not 2.71 please turn off psp
what should i do
help is appreciated

format your memory stick and then go to recovery mode and set your 'GAME' folder kernel to 1.50. Then re-install irshell 3.81 and put it in the 'GAME' folder. Try that.

You installed the wrong version of it.

Inside the zip file there should be about 4 diff versions.
Install the one for 1.50 not the one for 2.71