Do you have priiloader installed? Hold reset while powering on your Wii.
And btw, bootmii as boot2 is good. You will recover from this brick even if you do not have priiloader.
EDIT - Sorry I misread your post, you said you don't have bootmii as boot2?
Since savemiifree is working you can get a disc with a higher update than 3.4. Has to be an original disc.