Can't upgrade to anything past 3.52-4 m33

[Raz1293]

Yeah so I have 3.52 m33-4 but everytime I try to run the upgrader for anything past it it tells me that I need to have 3.52 m33-3 or higher. Any idea what I'm doing wrong? The instructions where pretty simple and my PSP isn't bricking or anything it just won't let me run it.

Edit: Nevermind I figured it out I still had it set to use the 1.50 kernel which was my problem.