I follow the softmod guide here: https://gbatemp.net/threads/how-to-softmod-hack-your-psp.293978/ in an attempt to be able to run homebrew on my psp 3000.
I was originally at 6.60 and used ChronoSwitch to downgrade to 6.20 but I wasn't able to get 6.20 PROC2 to install, I just got a perpetual...