Safe to reinstall flash memory partch

I followed Mario's guide on how to install cfw on 49.1 ofw and I did it perfectly I was able to log into my PSN account but I upgraded the storage and I read I can just upgrade it and use a USB with the cfw version I downloaded onto the ps3 to get it back to normal so I did and now it's telling me to disable syscall witch I don't recall it asking me to do before upgrading storage your guys thoughts????