I'm guessing you haven't installed the wireless Mikrotik package when upgrading... Go to System > Packages and check if it's there. If it's not, download it from mikrotik.com, copy it to your file list and reboot the router to install it so you can get your card properly recognized.
what version of RouterOS do you use? make sure to put the SAME VERSION package and it must be the MIPS-LE type (as you have RB133). For example if you use v3.25 this package is needed: