Can't downgrade from 4:21/3:55 hybrid fw

Hi i was on 3:55 rebug then I just upgraded to rogero 4.30 v2.03

But none of the home brew worked or deleted so I decided to downgrade to 3:55cfw and install multiman
But to get to 3:55 I had to install the hybrid cfw 4:21 Now when I went into recovery to update to 3:55 cfw it told me that only firmware over 4:21 can run !

so now I have manged to delete the home brew and install multiman latest
Which works on 4:21
So can I now just update back to 4.30 v2.03 or should I try to downgrade somehow? Thanks